CVE-2023-4015

high

Published 2024-01-25 · Modified 2024-01-25

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

8.0

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used. We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
rhel	9	fixed
sles		affected
debian	bookworm	fixed	`6.1.52-1`
debian	bullseye	fixed	`0`
debian	forky	fixed	`6.4.11-1`
debian	sid	fixed	`6.4.11-1`
debian	trixie	fixed	`6.4.11-1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.