Veille CVE
CVE-2026-43494
7.8 ÉlevéeDescription
In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned pages are released with put_page(), and rm->data.op_mmp_znotifier is cleared. But we fail to properly clear rm->data.op_nents. Later when rds_message_purge() is called from rds_sendmsg() the cleanup loop iterates over the incorrectly non zero number of op_nents and frees them again. Fix this by properly resetting op_nents when it should be in rds_message_zcopy_from_user().
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 7.8 Élevée | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 7.0 Élevée | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Faiblesses (CWE)
Références
- https://git.kernel.org/stable/c/03014551938a0887fa55f18ce49b70158a9c0113 Patch
- https://git.kernel.org/stable/c/0bbbff00a15b1df2cac9014d6cf4b6890f473353 Patch
- https://git.kernel.org/stable/c/290e833d1acb1093bc121fcdc97f5e6161157479 Patch
- https://git.kernel.org/stable/c/640e37f58f991546a87540d067279c2c1fa9fe51 Patch
- https://git.kernel.org/stable/c/9115669faedccdda100428e2d26fd0aac8c50799 Patch
- https://git.kernel.org/stable/c/c6e51512a784c4a7b86e1a044988696e3b3721fa Patch
- https://git.kernel.org/stable/c/d84ce1786ce40fdd3dd98db47aec5527817e1ef6 Patch
- https://git.kernel.org/stable/c/e174929793195e0cd6a4adb0cad731b39f9019b4 Patch
- https://github.com/v12-security/pocs/tree/main/pintheft ExploitThird Party Advisory
- http://www.openwall.com/lists/oss-security/2026/05/21/2 Mailing List
- https://access.redhat.com/security/cve/CVE-2026-43494
- https://bugzilla.redhat.com/show_bug.cgi?id=2480434
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43494.json