soc: fsl: qbman: fix race condition in qman_destroy_fq

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Summary

CVECVE-2026-23463
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-03 16:16:33 UTC
Updated2026-05-20 15:25:35 UTC
DescriptionIn 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().

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000320000 probability, percentile 0.092520000 (date 2026-04-21)

Problem Types: CWE-362

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c 66442cf9989bd4489fa80d9f37637d58ab016835 git Not specified
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210 git Not specified
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c 9e3d47904b8153c8c3ad2f9b66d5008aad677aa8 git Not specified
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c d21923a8059fa896bfef016f55dd769299335cb4 git Not specified
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c 751f60bd48edaf03f9d84ab09e5ce6705757d50f git Not specified
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c 85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa git Not specified
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c 265e56714635c5dd1e5964bfd97fa6e73f62cde5 git Not specified
CNA Linux Linux affected c535e923bb97a4b361e89a6383693482057f8b0c 014077044e874e270ec480515edbc1cadb976cf2 git Not specified
CNA Linux Linux affected 4.9 Not specified
CNA Linux Linux unaffected 4.9 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.167 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.130 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.20 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.10 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/751f60bd48edaf03f9d84ab09e5ce6705757d50f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/66442cf9989bd4489fa80d9f37637d58ab016835 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/9e3d47904b8153c8c3ad2f9b66d5008aad677aa8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/014077044e874e270ec480515edbc1cadb976cf2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/265e56714635c5dd1e5964bfd97fa6e73f62cde5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d21923a8059fa896bfef016f55dd769299335cb4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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