CVE-2026-90323
CVE CVE-2026-90323EUVD EUVD-2026-81984Published 2026-09-17T16:08:39.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ublk: validate auto buf reg before taking uring_cmd With UBLK_F_AUTO_BUF_REG, invalid sqe->addr can fail after ublk_fill_io_cmd() has set UBLK_IO_FLAG_ACTIVE. The uring_cmd is completed while the tag stays active, which can hang teardown. Split validation from buffer apply so the check has no side effects, then take the uring_cmd and store the already-validated buffer. Apply the same order in FETCH so io->buf is not written before __ublk_fetch() state checks.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.3-rc1; patch: 7.2.6; 52460dda3a775a73f226312b43c0a0211e8665ea <653d22269a8b83b491f7f186a5d7872f14e6ddca; patch: 0; 52460dda3a775a73f226312b43c0a0211e8665ea <ca5a01eee34c7cbe0f531a613b0292a3ad1a419b; 6.17
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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