libceph: make free_choose_arg_map() resilient to partial allocation
In the Linux kernel, the following vulnerability has been resolved: libceph: make free_choose_arg_map() resilient to partial allocation free_choose_arg_map() may dereference a NULL pointer if its caller fails after a partial allocation. For example, in decode_choose_args(), if allocation of arg_map->args fails, execution jumps to the fail label and free_choose_arg_map() is called. Since arg_map->size is updated to a non-zero value before memory allocation, free_choose_arg_map() will iterate over arg_map->args and dereference a NULL pointer. To prevent this potential NULL pointer dereference and make free_choose_arg_map() more resilient, add checks for pointers before iterating.
CVE-2026-22991
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-2026-22991
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": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "9b3730dabcf3764bfe3ff07caf55e641a0b45234",
"versionType": "git"
},
{
"status": "affected",
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "851241d3f78a5505224dc21c03d8692f530256b4",
"versionType": "git"
},
{
"status": "affected",
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "ec1850f663da64842614c86b20fe734be070c2ba",
"versionType": "git"
},
{
"status": "affected",
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "8081faaf089db5280c3be820948469f7c58ef8dd",
"versionType": "git"
},
{
"status": "affected",
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "c4c2152a858c0ce4d2bff6ca8c1d5b0ef9f2cbdf",
"versionType": "git"
},
{
"status": "affected",
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "f21c3fdb96833aac2f533506899fe38c19cf49d5",
"versionType": "git"
},
{
"status": "affected",
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "e3fe30e57649c551757a02e1cad073c47e1e075e",
"versionType": "git"
}
],
"programFiles": [
"net/ceph/osdmap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.161",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.121",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.66",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.6",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ceph/osdmap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-22991
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39721 · Revision 1
- Added to Heist Feed
- Publisher date