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Description

In the Linux kernel, the following vulnerability has been resolved: 8021q: delete cleared egress QoS mappings vlan_dev_set_egress_priority() currently keeps cleared egress priority mappings in the hash as tombstones. Repeated set/clear cycles with distinct skb priorities therefore accumulate mapping nodes until device teardown and leak memory. Delete mappings when vlan_prio is cleared instead of keeping tombstones. Now that the egress mapping lists are RCU protected, the node can be unlinked safely and freed after a grace period.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-28 | Updated 2026-05-28 | Assigner Linux

Product status

Default status
unaffected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before a52e122c9e4d56ad9a03b32c915a199276d989c3
affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 7dddc74af369478ba7f9bc136d0fc1dc4570cb66
affected

Default status
affected

2.6.12
affected

Any version before 2.6.12
unaffected

7.0.7 (semver)
unaffected

7.1-rc1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/a52e122c9e4d56ad9a03b32c915a199276d989c3

git.kernel.org/...c/7dddc74af369478ba7f9bc136d0fc1dc4570cb66

cve.org (CVE-2026-46153)

nvd.nist.gov (CVE-2026-46153)

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