cnvd - cnvd-2021-60528

cnvd-2021-60528

Vulnerability from cnvd

Title: Linux Kernel信息泄露漏洞（CNVD-2021-60528）

Description:

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。

Linux Kernel存在信息泄露漏洞，攻击者可以通过执行特制的BPF程序，利用该漏洞获取任意内核内存信息的内容。

Severity: 中

Patch Name: Linux Kernel信息泄露漏洞（CNVD-2021-60528）的补丁

Patch Description:

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。

Linux Kernel存在信息泄露漏洞，攻击者可以通过执行特制的BPF程序，利用该漏洞获取任意内核内存信息的内容。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

厂商已发布了漏洞修复程序，请及时关注更新： https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=d203b0fd863a2261e5d00b97f3d060c4c2a6db71

Reference: https://access.redhat.com/security/cve/CVE-2021-33624

Impacted products

Name
Linux Linux kernel

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-33624"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux Kernel\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u901a\u8fc7\u6267\u884c\u7279\u5236\u7684BPF\u7a0b\u5e8f\uff0c\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u4efb\u610f\u5185\u6838\u5185\u5b58\u4fe1\u606f\u7684\u5185\u5bb9\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=d203b0fd863a2261e5d00b97f3d060c4c2a6db71",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-60528",
  "openTime": "2021-08-10",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux Kernel\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u901a\u8fc7\u6267\u884c\u7279\u5236\u7684BPF\u7a0b\u5e8f\uff0c\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u4efb\u610f\u5185\u6838\u5185\u5b58\u4fe1\u606f\u7684\u5185\u5bb9\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Linux Kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2021-60528\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel"
  },
  "referenceLink": "https://access.redhat.com/security/cve/CVE-2021-33624",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-22",
  "title": "Linux Kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2021-60528\uff09"
}

CVE-2021-33624 (GCVE-0-2021-33624)

Vulnerability from cvelistv5

Published

2021-06-23 15:37

Modified

2024-08-03 23:58

Severity ?

CWE

Summary

In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.

References

▼	URL	Tags
	https://www.usenix.org/conference/usenixsecurity21/presentation/kirzner	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2021/06/21/1	x_refsource_CONFIRM
	https://github.com/torvalds/linux/commit/9183671af6dbf60a1219371d4ed73e23f43b49db	x_refsource_CONFIRM
	https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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            "url": "http://www.openwall.com/lists/oss-security/2021/06/21/1"
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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.
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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