| Name | CVE-2023-21400 |
| Description | In multiple functions of io_uring.c, there is a possible kernel memory corruption due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3623-1, DSA-5480-1, ELA-991-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | vulnerable |
| stretch (security) | 4.9.320-2 | vulnerable | |
| stretch (lts), stretch | 4.9.320-3 | vulnerable | |
| buster | 4.19.249-2 | fixed | |
| buster (security) | 4.19.304-1 | fixed | |
| bullseye | 5.10.209-2 | fixed | |
| bullseye (security) | 5.10.216-1 | fixed | |
| bookworm | 6.1.76-1 | fixed | |
| bookworm (security) | 6.1.90-1 | fixed | |
| sid, trixie | 6.7.12-1 | fixed | |
| linux-5.10 (PTS) | jessie, jessie (lts) | 5.10.209-2~deb8u1 | fixed |
| stretch (lts), stretch | 5.10.209-2~deb9u1 | fixed | |
| buster (security) | 5.10.216-1~deb10u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | jessie | (unfixed) | end-of-life | ||
| linux | source | stretch | (unfixed) | end-of-life | ||
| linux | source | buster | (not affected) | |||
| linux | source | bullseye | 5.10.191-1 | DSA-5480-1 | ||
| linux | source | (unstable) | 5.18.2-1 | |||
| linux-5.10 | source | jessie | 5.10.197-1~deb8u1 | ELA-991-1 | ||
| linux-5.10 | source | stretch | 5.10.197-1~deb9u1 | ELA-991-1 | ||
| linux-5.10 | source | buster | 5.10.197-1~deb10u1 | DLA-3623-1 |
[buster] - linux <not-affected> (Vulnerable code not present)
https://source.android.com/security/bulletin/pixel/2023-07-01
https://yanglingxi1993.github.io/dirty_pagetable/dirty_pagetable.html
https://www.openwall.com/lists/oss-security/2023/07/14/2
https://www.openwall.com/lists/oss-security/2023/07/25/9
https://twitter.com/VAR10CK/status/1683303642173153280