CVE-2023-4622
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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).
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Kernel
- Vendor
- Linux
- Product
- Kernel
- Platforms
- Unknown
- Default status
unaffected- Package
- kernel
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.2 | affected | custom | 4.14.324 | Unavailable | None listed |
| 4.15 | affected | custom | 4.19.293 | Unavailable | None listed |
| 4.20 | affected | custom | 5.4.255 | Unavailable | None listed |
| 5.5 | affected | custom | 5.10.192 | Unavailable | None listed |
| 5.11 | affected | custom | 5.15.128 | Unavailable | None listed |
| 5.16 | affected | custom | 6.1.47 | Unavailable | None listed |
| 6.2 | affected | custom | 6.4.12 | Unavailable | None listed |
| 6.5 | unaffected | custom | Unavailable | Unavailable | None listed |