soc: fsl: qbman: fix race condition in qman_destroy_fq
In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: fix race condition in qman_destroy_fq When QMAN_FQ_FLAG_DYNAMIC_FQID is set, there's a race condition between fq_table[fq->idx] state and freeing/allocating from the pool and WARN_ON(fq_table[fq->idx]) in qman_create_fq() gets triggered. Indeed, we can have: Thread A Thread B qman_destroy_fq() qman_create_fq() qman_release_fqid() qman_shutdown_fq() gen_pool_free() -- At this point, the fqid is available again -- qman_alloc_fqid() -- so, we can get the just-freed fqid in thread B -- fq->fqid = fqid; fq->idx = fqid * 2; WARN_ON(fq_table[fq->idx]); fq_table[fq->idx] = fq; fq_table[fq->idx] = NULL; And adding some logs between qman_release_fqid() and fq_table[fq->idx] = NULL makes the WARN_ON() trigger a lot more. To prevent that, ensure that fq_table[fq->idx] is set to NULL before gen_pool_free() is called by using smp_wmb().
CVE-2026-23463
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-2026-23463
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": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "66442cf9989bd4489fa80d9f37637d58ab016835",
"versionType": "git"
},
{
"status": "affected",
"version": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210",
"versionType": "git"
},
{
"status": "affected",
"version": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "9e3d47904b8153c8c3ad2f9b66d5008aad677aa8",
"versionType": "git"
},
{
"status": "affected",
"version": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "d21923a8059fa896bfef016f55dd769299335cb4",
"versionType": "git"
},
{
"status": "affected",
"version": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "751f60bd48edaf03f9d84ab09e5ce6705757d50f",
"versionType": "git"
},
{
"status": "affected",
"version": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa",
"versionType": "git"
},
{
"status": "affected",
"version": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "265e56714635c5dd1e5964bfd97fa6e73f62cde5",
"versionType": "git"
},
{
"status": "affected",
"version": "c535e923bb97a4b361e89a6383693482057f8b0c",
"lessThan": "014077044e874e270ec480515edbc1cadb976cf2",
"versionType": "git"
}
],
"programFiles": [
"drivers/soc/fsl/qbman/qman.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.78",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.20",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.10",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/soc/fsl/qbman/qman.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23463
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27257 · Revision 1
- Added to Heist Feed
- Publisher date