7.8
High
CVE-2023-4622 A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege…
Description
A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free. We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c (or backported equivalents).
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| kernel 6.5 | earliest → < 6.5 | 6.5 |
| kernel 6.2 | 6.2 → < 6.4.12 | 6.4.12 |
| kernel 5.16 | 5.16 → < 6.1.47 | 6.1.47 |
| kernel 5.11 | 5.11 → < 5.15.128 | 5.15.128 |
| kernel 5.5 | 5.5 → < 5.10.192 | 5.10.192 |
| kernel 4.20 | 4.20 → < 5.4.255 | 5.4.255 |
| kernel 4.15 | 4.15 → < 4.19.293 | 4.19.293 |
| kernel 4.2 | 4.2 → < 4.14.324 | 4.14.324 |
References
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- kernel.dance kernel.dance
- www.debian.org www.debian.org
- lists.debian.org lists.debian.org
- packetstormsecurity.com packetstormsecurity.com
- lists.debian.org lists.debian.org
Timeline
- Published
- Last modified
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