CVE-2026-43494: net/rds: reset op_nents when zerocopy page pin fails
Vendor fix available · Affected: Linux · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 35% of scored CVEs
DescriptionCVE.org
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().
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Linux · LinuxVersions not stated
- Linux · Linux4.17
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-43494 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-1341cwe.mitre.org
- git.kernel.org/stable/c/c6e51512a784c4a7b86e1a044988696e3b3721fagit.kernel.org
- git.kernel.org/stable/c/03014551938a0887fa55f18ce49b70158a9c0113git.kernel.org
- git.kernel.org/stable/c/d84ce1786ce40fdd3dd98db47aec5527817e1ef6git.kernel.org
- git.kernel.org/stable/c/9115669faedccdda100428e2d26fd0aac8c50799git.kernel.org
- git.kernel.org/stable/c/0bbbff00a15b1df2cac9014d6cf4b6890f473353git.kernel.org
- git.kernel.org/stable/c/640e37f58f991546a87540d067279c2c1fa9fe51git.kernel.org
- git.kernel.org/stable/c/290e833d1acb1093bc121fcdc97f5e6161157479git.kernel.org
- git.kernel.org/stable/c/e174929793195e0cd6a4adb0cad731b39f9019b4git.kernel.org
- github.com/v12-security/pocs/tree/main/pintheftgithub.com
- openwall.com/lists/oss-security/2026/05/21/2openwall.com
- access.redhat.com/security/cve/CVE-2026-43494access.redhat.com
- Issue trackerbugzilla.redhat.com
1 more reference is in the CVE record.