Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 52460dda3a775a73f226312b43c0a0211e8665ea before 8397942b67128e0b1275cfedb5abf4faafac5fd0; affected 52460dda3a775a73f226312b43c0a0211e8665ea before 653d22269a8b83b491f7f186a5d7872f14e6ddca; affected 52460dda3a775a73f226312b43c0a0211e8665ea before ca5a01eee34c7cbe0f531a613b0292a3ad1a419b |
| Linux / Linux | affected 6.17; unaffected 0 before 6.17; unaffected 6.18.57 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.