CVE-2023-52925

Medium

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: don't fail inserts if duplicate has expired nftables selftests fail: run-tests.sh testcases/sets/0044interval_overlap_0 Expected: 0-2 . 0-3, got: W: [FAILED] ./testcases/sets/0044interval_overlap_0: got 1 Insertion must ignore duplicate but expired entries. Moreover, there is a strange asymmetry in nft_pipapo_activate: It refetches the current element, whereas the other ->activate callbacks (bitmap, hash, rhash, rbtree) use elem->priv. Same for .remove: other set implementations take elem->priv, nft_pipapo_remove fetches elem->priv, then does a relookup, remove this. I suspect this was the reason for the change that prompted the removal of the expired check in pipapo_get() in the first place, but skipping exired elements there makes no sense to me, this helper is used for normal get requests, insertions (duplicate check) and deactivate callback. In first two cases expired elements must be skipped. For ->deactivate(), this gets called for DELSETELEM, so it seems to me that expired elements should be skipped as well, i.e. delete request should fail with -ENOENT error.

Package Linux Kernel
Published 2025-02-05
Last modified 2025-10-15
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.19.316, 5.4.262, 6.4.11 and later are affected. Fixed in 4.20, 5.5, 6.4.12 and their respective stable series.

Affected from
≥ 4.19.316 ≥ 5.4.262 ≥ 6.4.11
Fixed in
✓ 4.20 4.20.x ✓ 5.5 5.5.x ✓ 6.4.12 6.4.x

References

5 total

Frequently asked questions

  • What is CVE-2023-52925?

    CVE-2023-52925 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.19.316 onward and has been patched in 4.20, 5.5 and 6.4.12. CVE-2023-52925 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52925?

    CVE-2023-52925 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2023-52925?

    Yes. CVE-2023-52925 has been patched. Fixed versions include 4.20, 5.5 and 6.4.12. If you are running Linux kernel 4.19.316 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52925 actively exploited?

    No. CVE-2023-52925 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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