CVE-2023-53304
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: fix overlap expiration walk The lazy gc on insert that should remove timed-out entries fails to release the other half of the interval, if any.
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: fix overlap expiration walk The lazy gc on insert that should remove timed-out entries fails to release the other half of the interval, if any. Can be reproduced with tests/shell/testcases/sets/0044interval_overlap_0 in nftables.git and kmemleak enabled kernel. Second bug is the use of rbe_prev vs. prev pointer. If rbe_prev() returns NULL after at least one iteration, rbe_prev points to element that is not an end interval, hence it should not be removed. Lastly, check the genmask of the end interval if this is active in the current generation.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/50cbb9d195c197af671869c8cadce3bd483735a0Patch
- https://git.kernel.org/stable/c/8284a79136c384059e85e278da2210b809730287Patch
- https://git.kernel.org/stable/c/893cb3c3513cf661a0ff45fe0cfa83fe27131f76Patch
- https://git.kernel.org/stable/c/89a4d1a89751a0fbd520e64091873e19cc0979e8Patch
- https://git.kernel.org/stable/c/acaee227cf79c45a5d2d49c3e9a66333a462802cPatch
- https://git.kernel.org/stable/c/cd66733932399475fe933cb3ec03e687ed401462Patch
- https://git.kernel.org/stable/c/f718863aca469a109895cb855e6b81fff4827d71Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.