CVE-2026-46153
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.
Affected versions
Linux kernel versions
2.6.12
and later are affected. Fixed in
7.0.7,
7.1-rc1
and their respective stable series.
References
The following references provide additional information about CVE-2026-46153 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/7dddc74af369478ba7f9bc136d0fc1dc4570cb66
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PatchKernel patch commithttps://git.kernel.org/stable/c/a52e122c9e4d56ad9a03b32c915a199276d989c3
Frequently asked questions
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What is CVE-2026-46153?
CVE-2026-46153 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.12 onward and has been patched in 7.0.7 and 7.1-rc1. CVE-2026-46153 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46153?
Yes — CVE-2026-46153 has been patched. Fixed versions include 7.0.7 and 7.1-rc1. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46153 actively exploited?
No — CVE-2026-46153 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.