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CVE-2023-4622 (GCVE-0-2023-4622)

Vulnerability from cvelistv5 – Published: 2023-09-06 13:56 – Updated: 2026-09-17 19:26
VLAI
Title
Use-after-free in Linux kernel's af_unix component
Summary
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).
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Kernel Affected: 4.2 , < 4.14.324 (custom)
Affected: 4.15 , < 4.19.293 (custom)
Affected: 4.20 , < 5.4.255 (custom)
Affected: 5.5 , < 5.10.192 (custom)
Affected: 5.11 , < 5.15.128 (custom)
Affected: 5.16 , < 6.1.47 (custom)
Affected: 6.2 , < 6.4.12 (custom)
Unaffected: 6.5 (custom)
guessed Create a notification for this product.
Date Public
2023-08-23 15:52
Credits
Billy Jheng Bing-Jhong
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.