CVE-2026-43494net/rds: reset op_nents when zerocopy page pin fails
Updated under an hour ago ()
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It affects Linux and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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().
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-1341
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 before c6e51512a784c4a7b86e1a044988696e3b3721fa; from 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 before 03014551938a0887fa55f18ce49b70158a9c0113; from 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 before d84ce1786ce40fdd3dd98db47aec5527817e1ef6; from 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 before 9115669faedccdda100428e2d26fd0aac8c50799; 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 builds before 0bbbff00a15b1df2cac9014d6cf4b6890f473353; from 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 before 640e37f58f991546a87540d067279c2c1fa9fe51; from 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 before 290e833d1acb1093bc121fcdc97f5e6161157479; from 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 before e174929793195e0cd6a4adb0cad731b39f9019b4 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | 10 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 4.17 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10; 7.1; and 2 more ranges | NVD |
References
- https://git.kernel.org/stable/c/c6e51512a784c4a7b86e1a044988696e3b3721fapatch
- https://git.kernel.org/stable/c/03014551938a0887fa55f18ce49b70158a9c0113patch
- https://git.kernel.org/stable/c/d84ce1786ce40fdd3dd98db47aec5527817e1ef6patch
- https://git.kernel.org/stable/c/9115669faedccdda100428e2d26fd0aac8c50799patch
- https://git.kernel.org/stable/c/0bbbff00a15b1df2cac9014d6cf4b6890f473353patch
- https://git.kernel.org/stable/c/640e37f58f991546a87540d067279c2c1fa9fe51patch
- https://git.kernel.org/stable/c/290e833d1acb1093bc121fcdc97f5e6161157479patch
- https://git.kernel.org/stable/c/e174929793195e0cd6a4adb0cad731b39f9019b4patch
- https://github.com/v12-security/pocs/tree/main/pintheftexploit, third-party-advisory
- http://www.openwall.com/lists/oss-security/2026/05/21/2mailing-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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.