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CVE-2021-47186

UNKNOWN
Published 2024-04-10T18:56:26.297Z
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No CVSS data available

Description

In the Linux kernel, the following vulnerability has been resolved:

tipc: check for null after calling kmemdup

kmemdup can return a null pointer so need to check for it, otherwise
the null key will be dereferenced later in tipc_crypto_key_xmit as
can be seen in the trace [1].

[1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

1ef6f7c9390ff5308c940ff8d0a53533a4673ad9 1ef6f7c9390ff5308c940ff8d0a53533a4673ad9 1ef6f7c9390ff5308c940ff8d0a53533a4673ad9
Linux

Linux

Affected Versions:

5.10 0 5.10.82 5.15.5 5.16
linux

linux_kernel

Affected Versions:

1da177e4c3f4 1da177e4c3f4 1da177e4c3f4 5.10.82 5.15.5 5.16

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-vfmv-3fmr-wr8p

Advisory Details

In the Linux kernel, the following vulnerability has been resolved: tipc: check for null after calling kmemdup kmemdup can return a null pointer so need to check for it, otherwise the null key will be dereferenced later in tipc_crypto_key_xmit as can be seen in the trace [1]. [1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47186
WEB https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916
WEB https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10
WEB https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9

Advisory provided by GitHub Security Advisory Database. Published: April 10, 2024, Modified: July 8, 2024

References

https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9
https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10
https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916
Published: 2024-04-10T18:56:26.297Z
Last Modified: 2025-05-20T14:27:26.664Z
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