CVE-2023-4622
Use-after-free in Linux kernel's af_unix component
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
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.
Se puede explotar una vulnerabilidad de use-after-free en el componente Linux kernel's af_unix para lograr una escalada de privilegios local. La función unix_stream_sendpage() intenta añadir datos al último skb en la cola peer's recv sin bloquear la cola. Por lo tanto, existe una carrera donde unix_stream_sendpage() podría acceder a un skb sin bloqueo que está siendo liberado mediante la recolección de basura, resultando en use-after-free. Recomendamos actualizar después del commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.
A use-after-free flaw was found in the Linux kernel's af_unix component that allows 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. This issue leads to a race condition where the unix_stream_sendpage() function could access a skb that is being released by garbage collection, resulting in a use-after-free issue.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2023-08-30 CVE Reserved
- 2023-09-06 CVE Published
- 2023-09-12 EPSS Updated
- 2024-06-26 First Exploit
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-416: Use After Free
CAPEC
- CAPEC-233: Privilege Escalation
References (9)
URL | Date | SRC |
---|---|---|
https://github.com/0range1337/CVE-CVE-2023-4622 | 2024-06-26 |
URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2023-4622 | 2024-08-13 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2237760 | 2024-08-13 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.2 < 6.1.47 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 6.1.47" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 12.0 Search vendor "Debian" for product "Debian Linux" and version "12.0" | - |
Affected
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