rbd: Reset positive result codes to zero in object map update path
In the Linux kernel, the following vulnerability has been resolved: rbd: Reset positive result codes to zero in object map update path In a reply message to an RBD request, a positive result code indicates a data payload, which is not allowed for writes. While rbd_osd_req_callback() already resets a positive result code for writes to zero, rbd_object_map_callback() does not. This allows a corrupted reply to an object map update to trigger the rbd_assert(*result < 0) in __rbd_obj_handle_request(). This happens, because rbd_object_map_callback() calls rbd_obj_handle_request() -> __rbd_obj_handle_request() and passes this positive result code. From __rbd_obj_handle_request(), rbd_obj_advance_write() is called, which leaves the positive result code unchanged and returns true. Therefore, the if(done && *result) branch is executed in __rbd_obj_handle_request() and the assertion triggers. This patch fixes the issue by adjusting the logic in the rbd_object_map_callback() path. A positive result code for an object map update is now reset to zero (similar to rbd_osd_req_callback()), and the message is subsequently handled the same way as if the result code was zero from the beginning. Additionally, a WARN_ON_ONCE() is added for this case.
CVE-2026-68131
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-2026-68131
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": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "cf1167292f606deaddac35ec384eba48f08a68d2",
"versionType": "git"
},
{
"status": "affected",
"version": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "da926959bf791441ba06a80571708c3d0d3cc08f",
"versionType": "git"
},
{
"status": "affected",
"version": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "6f33d9d539fb94e5a17589c2dfe271ff9bb64904",
"versionType": "git"
},
{
"status": "affected",
"version": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "14995c4250f04b58bf6fc00e0e973a2e1b3cfb9b",
"versionType": "git"
},
{
"status": "affected",
"version": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "2419aa74081007dc4d14ff5640659052dfdfd69a",
"versionType": "git"
},
{
"status": "affected",
"version": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "34f2a2f32af570dfcc532ad70c080629ee1c32b0",
"versionType": "git"
},
{
"status": "affected",
"version": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "b1a61366933224b3ad80975c4d01ac2cc6931ecf",
"versionType": "git"
},
{
"status": "affected",
"version": "22e8bd51bb0469d1a524130a057f894ff632376a",
"lessThan": "a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4",
"versionType": "git"
}
],
"programFiles": [
"drivers/block/rbd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/block/rbd.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68131
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41127 · Revision 1
- Added to Heist Feed
- Publisher date