CVE-2022-49344: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix a data-race in unix_dgram_peer_wake_me(). unix_dgram_poll() calls unix_dgram_peer_wake_me() without `other`'s lock held and check if its receive queue is full. Here we need to use unix_recvq_full_lockless() instead of unix_recvq_full(), otherwise KCSAN will report a data-race.

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CVSS v3.1 Score

4.7

MEDIUM

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

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.2.75 — 3.3
linux	linux_kernel	3.4.111 — 3.5
linux	linux_kernel	3.10.95 — 3.11
linux	linux_kernel	3.12.52 — 3.13
linux	linux_kernel	3.14.59 — 3.15
linux	linux_kernel	3.18.26 — 3.19
linux	linux_kernel	4.1.15 — 4.2
linux	linux_kernel	4.2.8 — 4.3
linux	linux_kernel	4.3.3 — 4.19.247
linux	linux_kernel	4.20 — 5.4.198
linux	linux_kernel	5.5 — 5.10.122
linux	linux_kernel	5.11 — 5.15.47
linux	linux_kernel	5.16 — 5.17.15
linux	linux_kernel	5.18 — 5.18.4
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/556720013c36c193d9cbfb06e7b33e51f0c39fbf https://git.kernel.org/stable/c/662a80946ce13633ae90a55379f1346c10f0c432 https://git.kernel.org/stable/c/71e8bfc7f838cabc60cba24e09ca84c4f8321ab2 https://git.kernel.org/stable/c/8801eb3ccd2e4e3b1a01449383e3321ae6dbd9d6 https://git.kernel.org/stable/c/95f0ba806277733bf6024e23e27e1be773701cca https://git.kernel.org/stable/c/c61848500a3fd6867dfa4834b8c7f97133eceb9f https://git.kernel.org/stable/c/c926ae58f24f7bd55aa2ea4add9f952032507913

Frequently Asked Questions

What is CVE-2022-49344? +

In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix a data-race in unix_dgram_peer_wake_me(). unix_dgram_poll() calls unix_dgram_peer_wake_me() without `other`'s lock held and check if its receive queue is full. Here we need to use unix_recvq_full_lockless() instead of unix_recvq_full(), otherwise KCSAN will report a data-race. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2022-49344? +

CVE-2022-49344 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-49344? +

CVE-2022-49344 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-49344? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2022-49344