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CERTFR-2021-AVI-149
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Ubuntu 16.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 20.10",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 18.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 20.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 14.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2020-29368",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29368"
},
{
"name": "CVE-2020-28974",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28974"
},
{
"name": "CVE-2020-28915",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28915"
},
{
"name": "CVE-2020-28588",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28588"
},
{
"name": "CVE-2020-27777",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27777"
},
{
"name": "CVE-2020-27152",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27152"
},
{
"name": "CVE-2020-29660",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29660"
},
{
"name": "CVE-2020-29569",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29569"
},
{
"name": "CVE-2020-29661",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29661"
},
{
"name": "CVE-2020-25284",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25284"
},
{
"name": "CVE-2020-25704",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25704"
},
{
"name": "CVE-2020-25212",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25212"
},
{
"name": "CVE-2020-27835",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27835"
},
{
"name": "CVE-2020-14314",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-14314"
},
{
"name": "CVE-2020-27830",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27830"
},
{
"name": "CVE-2020-29568",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29568"
},
{
"name": "CVE-2020-27815",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27815"
},
{
"name": "CVE-2020-24490",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24490"
},
{
"name": "CVE-2020-29371",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29371"
},
{
"name": "CVE-2020-35508",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-35508"
},
{
"name": "CVE-2020-28941",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28941"
},
{
"name": "CVE-2020-15437",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-15437"
},
{
"name": "CVE-2020-29374",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29374"
},
{
"name": "CVE-2020-25656",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25656"
},
{
"name": "CVE-2020-25669",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25669"
},
{
"name": "CVE-2020-28374",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28374"
},
{
"name": "CVE-2020-25668",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25668"
},
{
"name": "CVE-2020-15436",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-15436"
},
{
"name": "CVE-2021-20177",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-20177"
},
{
"name": "CVE-2020-10135",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-10135"
},
{
"name": "CVE-2020-29369",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29369"
},
{
"name": "CVE-2020-25643",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25643"
},
{
"name": "CVE-2020-27675",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27675"
},
{
"name": "CVE-2020-25641",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25641"
},
{
"name": "CVE-2020-27673",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27673"
}
],
"initial_release_date": "2021-02-26T00:00:00",
"last_revision_date": "2021-02-26T00:00:00",
"links": [],
"reference": "CERTFR-2021-AVI-149",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-02-26T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux\nd\u0027Ubuntu. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer\nune ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de service \u00e0\ndistance et un contournement de la politique de s\u00e9curit\u00e9.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux d\u0027Ubuntu",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4751-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4751-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4752-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4752-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4749-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4749-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4750-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4750-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4748-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4748-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4753-1 du 25 f\u00e9vrier 2021",
"url": "https://ubuntu.com/security/notices/USN-4753-1"
}
]
}
CVE-2020-25656 (GCVE-0-2020-25656)
Vulnerability from cvelistv5
Published
2020-12-02 00:00
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.
References
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1888726"
},
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"url": "https://lkml.org/lkml/2020/10/29/528"
},
{
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"url": "https://lkml.org/lkml/2020/10/16/84"
},
{
"name": "[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html"
},
{
"name": "[debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html"
},
{
"tags": [
"x_transferred"
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"url": "https://www.starwindsoftware.com/security/sw-20210325-0006/"
}
],
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}
],
"cna": {
"affected": [
{
"product": "kernel",
"vendor": "n/a",
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"dateUpdated": "2022-10-11T00:00:00",
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"references": [
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1888726"
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{
"url": "https://lkml.org/lkml/2020/10/29/528"
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{
"url": "https://lkml.org/lkml/2020/10/16/84"
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{
"name": "[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update",
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},
{
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"tags": [
"mailing-list"
],
"url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html"
},
{
"url": "https://www.starwindsoftware.com/security/sw-20210325-0006/"
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]
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"cveId": "CVE-2020-25656",
"datePublished": "2020-12-02T00:00:00",
"dateReserved": "2020-09-16T00:00:00",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2020-29660 (GCVE-0-2020-29660)
Vulnerability from cvelistv5
Published
2020-12-09 16:57
Modified
2024-08-04 16:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
{
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8bcd9c5be24fb9e6132e97da5a35e55a83e36b9"
},
{
"name": "[oss-security] 20201210 2 kernel issues",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2020/12/10/1"
},
{
"name": "FEDORA-2020-b732958765",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/"
},
{
"name": "FEDORA-2020-bc0cc81a7a",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20210122-0001/"
},
{
"name": "DSA-4843",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN",
"x_transferred"
],
"url": "https://www.debian.org/security/2021/dsa-4843"
},
{
"name": "[debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html"
},
{
"name": "[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update",
"tags": [
"mailing-list",
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],
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html"
},
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"x_transferred"
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"url": "http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html"
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}
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{
"name": "FEDORA-2020-bc0cc81a7a",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/"
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{
"tags": [
"x_refsource_CONFIRM"
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"url": "https://security.netapp.com/advisory/ntap-20210122-0001/"
},
{
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"tags": [
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"url": "https://www.debian.org/security/2021/dsa-4843"
},
{
"name": "[debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update",
"tags": [
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],
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html"
},
{
"name": "[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html"
},
{
"tags": [
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"url": "http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html"
}
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"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/12/10/1"
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{
"name": "FEDORA-2020-b732958765",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/"
},
{
"name": "FEDORA-2020-bc0cc81a7a",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/"
},
{
"name": "https://security.netapp.com/advisory/ntap-20210122-0001/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20210122-0001/"
},
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CVE-2020-29369 (GCVE-0-2020-29369)
Vulnerability from cvelistv5
Published
2020-11-28 06:20
Modified
2024-08-04 16:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
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CVE-2020-29568 (GCVE-0-2020-29568)
Vulnerability from cvelistv5
Published
2020-12-15 16:52
Modified
2024-08-04 16:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2020-25668 (GCVE-0-2020-25668)
Vulnerability from cvelistv5
Published
2021-05-26 11:11
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-362 - -> CWE-416
Summary
A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: 5.9.2 |
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CVE-2020-29569 (GCVE-0-2020-29569)
Vulnerability from cvelistv5
Published
2020-12-15 17:00
Modified
2024-08-04 16:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback.
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CVE-2020-28941 (GCVE-0-2020-28941)
Vulnerability from cvelistv5
Published
2020-11-19 15:23
Modified
2024-08-04 16:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.
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CVE-2020-28974 (GCVE-0-2020-28974)
Vulnerability from cvelistv5
Published
2020-11-20 17:49
Modified
2024-08-04 16:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2020-25284 (GCVE-0-2020-25284)
Vulnerability from cvelistv5
Published
2020-09-13 17:28
Modified
2024-08-04 15:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices, aka CID-f44d04e696fe.
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CVE-2020-25669 (GCVE-0-2020-25669)
Vulnerability from cvelistv5
Published
2021-05-26 11:25
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: 5.9.4 |
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CVE-2020-24490 (GCVE-0-2020-24490)
Vulnerability from cvelistv5
Published
2021-02-02 21:29
Modified
2024-08-04 15:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- denial of service
Summary
Improper buffer restrictions in BlueZ may allow an unauthenticated user to potentially enable denial of service via adjacent access. This affects all Linux kernel versions that support BlueZ.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | BlueZ Advisory |
Version: all Linux kernel versions that support BlueZ |
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CVE-2020-25212 (GCVE-0-2020-25212)
Vulnerability from cvelistv5
Published
2020-09-09 15:52
Modified
2024-08-04 15:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452.
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CVE-2020-14314 (GCVE-0-2020-14314)
Vulnerability from cvelistv5
Published
2020-09-15 00:00
Modified
2024-08-04 12:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A memory out-of-bounds read flaw was found in the Linux kernel before 5.9-rc2 with the ext3/ext4 file system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash the system if the directory exists. The highest threat from this vulnerability is to system availability.
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux Kernel | kernel |
Version: before 5.9-rc2 |
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CVE-2020-28374 (GCVE-0-2020-28374)
Vulnerability from cvelistv5
Published
2021-01-13 03:07
Modified
2024-08-04 16:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.
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CVE-2021-20177 (GCVE-0-2021-20177)
Vulnerability from cvelistv5
Published
2021-05-26 20:48
Modified
2024-08-03 17:30
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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CVE-2020-15437 (GCVE-0-2020-15437)
Vulnerability from cvelistv5
Published
2020-11-23 20:10
Modified
2024-08-04 13:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- NULL Pointer Dereference
Summary
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | linux kernel |
Version: 5.7 (verified), possibly others 4.18 |
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CVE-2020-25641 (GCVE-0-2020-25641)
Vulnerability from cvelistv5
Published
2020-10-06 13:33
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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CVE-2020-25704 (GCVE-0-2020-25704)
Vulnerability from cvelistv5
Published
2020-12-02 00:00
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service.
References
| URL | Tags | |||||||||||||||||||
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CVE-2020-29374 (GCVE-0-2020-29374)
Vulnerability from cvelistv5
Published
2020-11-28 06:18
Modified
2024-08-04 16:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-27675 (GCVE-0-2020-27675)
Vulnerability from cvelistv5
Published
2020-10-22 20:32
Modified
2024-08-04 16:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5.
References
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CVE-2020-10135 (GCVE-0-2020-10135)
Vulnerability from cvelistv5
Published
2020-05-19 15:50
Modified
2024-09-17 02:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Summary
Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key.
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2020-15436 (GCVE-0-2020-15436)
Vulnerability from cvelistv5
Published
2020-11-23 20:08
Modified
2024-08-04 13:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Use After Free
Summary
Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | linux kernel |
Version: 5.7 (verified), possibly others 4.18 |
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CVE-2020-27835 (GCVE-0-2020-27835)
Vulnerability from cvelistv5
Published
2021-01-07 17:24
Modified
2024-08-04 16:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2020-35508 (GCVE-0-2020-35508)
Vulnerability from cvelistv5
Published
2021-03-26 16:45
Modified
2024-08-04 17:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
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CVE-2020-29661 (GCVE-0-2020-29661)
Vulnerability from cvelistv5
Published
2020-12-09 16:57
Modified
2024-08-04 16:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
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CVE-2020-28915 (GCVE-0-2020-28915)
Vulnerability from cvelistv5
Published
2020-11-18 07:59
Modified
2024-08-04 16:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.
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CVE-2020-27830 (GCVE-0-2020-27830)
Vulnerability from cvelistv5
Published
2021-05-13 14:15
Modified
2024-08-04 16:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.
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CVE-2020-27777 (GCVE-0-2020-27777)
Vulnerability from cvelistv5
Published
2020-12-15 16:57
Modified
2024-08-04 16:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.
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CVE-2020-29368 (GCVE-0-2020-29368)
Vulnerability from cvelistv5
Published
2020-11-28 06:20
Modified
2024-08-04 16:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.
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CVE-2020-27152 (GCVE-0-2020-27152)
Vulnerability from cvelistv5
Published
2020-11-06 07:46
Modified
2024-08-04 16:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic.c in the Linux kernel before 5.9.2. It has an infinite loop related to improper interaction between a resampler and edge triggering, aka CID-77377064c3a9.
References
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CVE-2020-27815 (GCVE-0-2020-27815)
Vulnerability from cvelistv5
Published
2021-05-26 12:18
Modified
2024-08-04 16:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: 5.9.6 |
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CVE-2020-29371 (GCVE-0-2020-29371)
Vulnerability from cvelistv5
Published
2020-11-28 06:19
Modified
2024-08-04 16:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in romfs_dev_read in fs/romfs/storage.c in the Linux kernel before 5.8.4. Uninitialized memory leaks to userspace, aka CID-bcf85fcedfdd.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-27673 (GCVE-0-2020-27673)
Vulnerability from cvelistv5
Published
2020-10-22 20:33
Modified
2024-08-04 16:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.
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CVE-2020-28588 (GCVE-0-2020-28588)
Vulnerability from cvelistv5
Published
2021-05-10 18:54
Modified
2024-08-04 16:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-681 - Incorrect Conversion between Numeric Types
Summary
An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: Linux Kernel v5.10-rc4,Linux Kernel v5.4.66,Linux Kernel v5.9.8 |
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CVE-2020-25643 (GCVE-0-2020-25643)
Vulnerability from cvelistv5
Published
2020-10-06 00:00
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
| URL | Tags | |||||||||||||||||||||||||||||||
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},
{
"name": "[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20201103-0002/"
},
{
"tags": [
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],
"url": "https://www.starwindsoftware.com/security/sw-20210325-0002/"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "kernel",
"vendor": "n/a",
"versions": [
{
"status": "affected",
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}
]
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],
"descriptions": [
{
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"value": "A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."
}
],
"problemTypes": [
{
"descriptions": [
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"description": "CWE-20",
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],
"providerMetadata": {
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"shortName": "redhat"
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"references": [
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{
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{
"name": "openSUSE-SU-2020:1655",
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},
{
"name": "openSUSE-SU-2020:1698",
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"url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html"
},
{
"name": "DSA-4774",
"tags": [
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],
"url": "https://www.debian.org/security/2020/dsa-4774"
},
{
"name": "[debian-lts-announce] 20201028 [SECURITY] [DLA 2417-1] linux-4.19 security update",
"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html"
},
{
"name": "[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update",
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},
{
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"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"
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{
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},
{
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},
"cveMetadata": {
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"assignerShortName": "redhat",
"cveId": "CVE-2020-25643",
"datePublished": "2020-10-06T00:00:00",
"dateReserved": "2020-09-16T00:00:00",
"dateUpdated": "2024-08-04T15:40:36.280Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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