Skip to main content
cve.nowby Sazabi
← All vulnerabilities
CVE-2026-23463

soc: fsl: qbman: fix race condition in qman_destroy_fq

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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().

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in 66442cf9989bd4489fa80d9f37637d58ab016835; From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210; From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in 9e3d47904b8153c8c3ad2f9b66d5008aad677aa8; From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in d21923a8059fa896bfef016f55dd769299335cb4; From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in 751f60bd48edaf03f9d84ab09e5ce6705757d50f; From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in 85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa; From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in 265e56714635c5dd1e5964bfd97fa6e73f62cde5; From c535e923bb97a4b361e89a6383693482057f8b0c · fixed in 014077044e874e270ec480515edbc1cadb976cf2

  • Linux Linux

    4.9

  • KernelLinux

    From 4.9.0 · fixed in 5.10.253; From 5.11.0 · fixed in 5.15.203; From 5.16.0 · fixed in 6.1.167; From 6.2.0 · fixed in 6.6.130; From 6.7.0 · fixed in 6.12.78; From 6.13.0 · fixed in 6.18.20; From 6.19.0 · fixed in 6.19.10

References 8

git.kernel.org