octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()

Summary

CVECVE-2025-39978
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-10-15 08:15:35 UTC
Updated2026-07-14 13:17:52 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node" and then dereferences it on the next line. Two lines later, we take a mutex so I don't think this is an RCU safe region. Re-order it to do the dereferences before queuing up the free.

Risk And Classification

EPSS: 0.001860000 probability, percentile 0.083470000 (date 2026-07-14)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 68fbff68dbea35f9e6f7649dd22fce492a5aedac 5723120423a753a220b8b2954b273838b9d7e74a git Not specified
CNA Linux Linux affected 68fbff68dbea35f9e6f7649dd22fce492a5aedac df2c071061ed52d2225d97b212d27ecedf456b8a git Not specified
CNA Linux Linux affected 68fbff68dbea35f9e6f7649dd22fce492a5aedac c41b2941a024d4ec7c768e16ffb10a74b188fced git Not specified
CNA Linux Linux affected 68fbff68dbea35f9e6f7649dd22fce492a5aedac a8a63f27c3a8a3714210d32b12fd0f16d0337414 git Not specified
CNA Linux Linux affected 68fbff68dbea35f9e6f7649dd22fce492a5aedac d9c70e93ec5988ab07ad2a92d9f9d12867f02c56 git Not specified
CNA Linux Linux affected 5.14 Not specified
CNA Linux Linux unaffected 5.14 semver Not specified
CNA Linux Linux unaffected 6.1.155 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.109 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.50 6.12.* semver Not specified
CNA Linux Linux unaffected 6.16.10 6.16.* semver Not specified
CNA Linux Linux unaffected 6.17 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5723120423a753a220b8b2954b273838b9d7e74a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c41b2941a024d4ec7c768e16ffb10a74b188fced 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a8a63f27c3a8a3714210d32b12fd0f16d0337414 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/df2c071061ed52d2225d97b212d27ecedf456b8a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/d9c70e93ec5988ab07ad2a92d9f9d12867f02c56 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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