net/rds: reset op_nents when zerocopy page pin fails
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().
CVE-2026-43494
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-43494
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "c6e51512a784c4a7b86e1a044988696e3b3721fa",
"versionType": "git"
},
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "03014551938a0887fa55f18ce49b70158a9c0113",
"versionType": "git"
},
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "d84ce1786ce40fdd3dd98db47aec5527817e1ef6",
"versionType": "git"
},
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "9115669faedccdda100428e2d26fd0aac8c50799",
"versionType": "git"
},
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "0bbbff00a15b1df2cac9014d6cf4b6890f473353",
"versionType": "git"
},
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "640e37f58f991546a87540d067279c2c1fa9fe51",
"versionType": "git"
},
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "290e833d1acb1093bc121fcdc97f5e6161157479",
"versionType": "git"
},
{
"status": "affected",
"version": "0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3",
"lessThan": "e174929793195e0cd6a4adb0cad731b39f9019b4",
"versionType": "git"
}
],
"programFiles": [
"net/rds/message.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.141",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.91",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.33",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.10",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/rds/message.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43494
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40084 · Revision 1
- Added to Heist Feed
- Publisher date