7
CVE-2023-4622
- EPSS 0.55%
- Veröffentlicht 06.09.2023 14:15:12
- Zuletzt bearbeitet 17.09.2026 20:16:47
- Erkennungen
Use-after-free in Linux kernel's af_unix component
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).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.2 < 4.14.324
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.293
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.255
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.192
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.128
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.47
Linux ≫ Linux Kernel Version >= 6.2 < 6.4.12
Debian ≫ Debian Linux Version 10.0
Debian ≫ Debian Linux Version 12.0
VulnDex Vulnerability Enrichment
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Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.55% | 0.415 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| NIST | 7 | 1 | 5.9 |
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| cve-coordination@google.com | 7.8 | 1.8 | 5.9 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
CWE-416 Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://www.debian.org/security/2023/dsa-5492
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y&id=790c2f9d15b594350ae9bca7b236f2b1859de02c
https://kernel.dance/790c2f9d15b594350ae9bca7b236f2b1859de02c
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4821df2ffe38d629170edc266e65fa05970e0745