| Name | CVE-2025-21863 |
| Description | In the Linux kernel, the following vulnerability has been resolved: io_uring: prevent opcode speculation sqe->opcode is used for different tables, make sure we santitise it against speculations. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.237-1 | vulnerable |
| bookworm | 6.1.148-1 | vulnerable |
| bookworm (security) | 6.1.147-1 | vulnerable |
| trixie | 6.12.43-1 | fixed |
| trixie (security) | 6.12.41-1 | fixed |
| forky | 6.16.3-1 | fixed |
| sid | 6.16.7-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linux | source | (unstable) | 6.12.17-1 | | | |
Notes
https://git.kernel.org/linus/1e988c3fe1264708f4f92109203ac5b1d65de50b (6.14-rc4)