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CERTFR-2021-AVI-436
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à la confidentialité des données.
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 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
}
}
}
],
"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-2021-29264",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-29264"
},
{
"name": "CVE-2020-25672",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25672"
},
{
"name": "CVE-2021-30002",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-30002"
},
{
"name": "CVE-2021-3483",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3483"
},
{
"name": "CVE-2021-31916",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-31916"
},
{
"name": "CVE-2021-29647",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-29647"
},
{
"name": "CVE-2021-28971",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28971"
},
{
"name": "CVE-2021-28952",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28952"
},
{
"name": "CVE-2021-28038",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28038"
},
{
"name": "CVE-2020-25671",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25671"
},
{
"name": "CVE-2021-28950",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28950"
},
{
"name": "CVE-2021-28688",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28688"
},
{
"name": "CVE-2021-29155",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-29155"
},
{
"name": "CVE-2020-25670",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25670"
},
{
"name": "CVE-2021-28972",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28972"
},
{
"name": "CVE-2021-28660",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28660"
},
{
"name": "CVE-2021-33200",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-33200"
},
{
"name": "CVE-2021-28964",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28964"
},
{
"name": "CVE-2021-33033",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-33033"
},
{
"name": "CVE-2021-31829",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-31829"
},
{
"name": "CVE-2021-3501",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3501"
},
{
"name": "CVE-2020-25673",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-25673"
}
],
"initial_release_date": "2021-06-07T00:00:00",
"last_revision_date": "2021-06-07T00:00:00",
"links": [],
"reference": "CERTFR-2021-AVI-436",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-06-07T00:00:00.000000"
}
],
"risks": [
{
"description": "Ex\u00e9cution de code arbitraire"
},
{
"description": "D\u00e9ni de service"
},
{
"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. Elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de\ncode arbitraire, un d\u00e9ni de service et une atteinte \u00e0 la confidentialit\u00e9\ndes donn\u00e9es.\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-4982-1 du 03 juin 2021",
"url": "https://ubuntu.com/security/notices/USN-4982-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4984-1 du 04 juin 2021",
"url": "https://ubuntu.com/security/notices/USN-4984-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4983-1 du 03 juin 2021",
"url": "https://ubuntu.com/security/notices/USN-4983-1"
}
]
}
CVE-2021-33033 (GCVE-0-2021-33033)
Vulnerability from cvelistv5
Published
2021-05-14 22:57
Modified
2024-08-03 23:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.
References
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CVE-2021-33200 (GCVE-0-2021-33200)
Vulnerability from cvelistv5
Published
2021-05-27 00:00
Modified
2024-08-03 23:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2021-3501 (GCVE-0-2021-3501)
Vulnerability from cvelistv5
Published
2021-05-05 22:31
Modified
2024-08-03 16:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
References
| URL | Tags | |
|---|---|---|
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CVE-2021-3483 (GCVE-0-2021-3483)
Vulnerability from cvelistv5
Published
2021-05-17 11:25
Modified
2024-08-03 16:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected
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CVE-2021-30002 (GCVE-0-2021-30002)
Vulnerability from cvelistv5
Published
2021-04-02 04:18
Modified
2024-08-03 22:24
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel before 5.11.3 when a webcam device exists. video_usercopy in drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak for large arguments, aka CID-fb18802a338b.
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CVE-2021-28950 (GCVE-0-2021-28950)
Vulnerability from cvelistv5
Published
2021-03-20 19:55
Modified
2024-08-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in fs/fuse/fuse_i.h in the Linux kernel before 5.11.8. A "stall on CPU" can occur because a retry loop continually finds the same bad inode, aka CID-775c5033a0d1.
References
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CVE-2021-28964 (GCVE-0-2021-28964)
Vulnerability from cvelistv5
Published
2021-03-22 07:17
Modified
2024-08-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
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CVE-2021-29155 (GCVE-0-2021-29155)
Vulnerability from cvelistv5
Published
2021-04-20 00:00
Modified
2024-08-03 22:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||
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CVE-2020-25670 (GCVE-0-2020-25670)
Vulnerability from cvelistv5
Published
2021-05-26 10:28
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lead to privilege escalations.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: All |
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CVE-2021-28688 (GCVE-0-2021-28688)
Vulnerability from cvelistv5
Published
2021-04-06 18:07
Modified
2024-08-03 21:47
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
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CVE-2020-25671 (GCVE-0-2020-25671)
Vulnerability from cvelistv5
Published
2021-05-26 10:44
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: All |
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CVE-2021-31829 (GCVE-0-2021-31829)
Vulnerability from cvelistv5
Published
2021-05-06 15:43
Modified
2024-08-03 23:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.
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CVE-2021-28952 (GCVE-0-2021-28952)
Vulnerability from cvelistv5
Published
2021-03-20 20:05
Modified
2024-08-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel through 5.11.8. The sound/soc/qcom/sdm845.c soundwire device driver has a buffer overflow when an unexpected port ID number is encountered, aka CID-1c668e1c0a0f. (This has been fixed in 5.12-rc4.)
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-29264 (GCVE-0-2021-29264)
Vulnerability from cvelistv5
Published
2021-03-26 21:35
Modified
2024-08-03 22:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel through 5.11.10. drivers/net/ethernet/freescale/gianfar.c in the Freescale Gianfar Ethernet driver allows attackers to cause a system crash because a negative fragment size is calculated in situations involving an rx queue overrun when jumbo packets are used and NAPI is enabled, aka CID-d8861bab48b6.
References
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CVE-2021-31916 (GCVE-0-2021-31916)
Vulnerability from cvelistv5
Published
2021-05-06 16:14
Modified
2024-08-03 23:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
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CVE-2021-28972 (GCVE-0-2021-28972)
Vulnerability from cvelistv5
Published
2021-03-22 16:53
Modified
2024-08-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.
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CVE-2021-28038 (GCVE-0-2021-28038)
Vulnerability from cvelistv5
Published
2021-03-05 00:00
Modified
2024-08-03 21:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2020-25673 (GCVE-0-2020-25673)
Vulnerability from cvelistv5
Published
2021-05-26 10:55
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak and eventually hanging-up the system.
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: All |
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CVE-2021-28660 (GCVE-0-2021-28660)
Vulnerability from cvelistv5
Published
2021-03-17 00:00
Modified
2024-08-03 21:47
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
rtw_wx_set_scan in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the Linux kernel through 5.11.6 allows writing beyond the end of the ->ssid[] array. NOTE: from the perspective of kernel.org releases, CVE IDs are not normally used for drivers/staging/* (unfinished work); however, system integrators may have situations in which a drivers/staging issue is relevant to their own customer base.
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CVE-2021-29647 (GCVE-0-2021-29647)
Vulnerability from cvelistv5
Published
2021-03-30 20:36
Modified
2024-08-03 22:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel before 5.11.11. qrtr_recvmsg in net/qrtr/qrtr.c allows attackers to obtain sensitive information from kernel memory because of a partially uninitialized data structure, aka CID-50535249f624.
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CVE-2021-28971 (GCVE-0-2021-28971)
Vulnerability from cvelistv5
Published
2021-03-22 16:53
Modified
2024-08-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 on some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled, aka CID-d88d05a9e0b6.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2020-25672 (GCVE-0-2020-25672)
Vulnerability from cvelistv5
Published
2021-05-25 19:38
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A memory leak vulnerability was found in Linux kernel in llcp_sock_connect
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Linux Kernel |
Version: All |
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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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