CVE-2024-26643
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout While the rhashtable set gc runs asynchronously, a race allows it to collect elements from anonymous…
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout While the rhashtable set gc runs asynchronously, a race allows it to collect elements from anonymous sets with timeouts while it is being released from the commit path. Mingi Cho originally reported this issue in a different path in 6.1.x with a pipapo set with low timeouts which is not possible upstream since 7395dfacfff6 ("netfilter: nf_tables: use timestamp to check for set element timeout"). Fix this by setting on the dead flag for anonymous sets to skip async gc in this case. According to 08e4c8c5919f ("netfilter: nf_tables: mark newset as dead on transaction abort"), Florian plans to accelerate abort path by releasing objects via workqueue, therefore, this sets on the dead flag for abort path too.
- 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
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/291cca35818bd52a407bc37ab45a15816039e363Patch
- https://git.kernel.org/stable/c/406b0241d0eb598a0b330ab20ae325537d8d8163Patch
- https://git.kernel.org/stable/c/5224afbc30c3ca9ba23e752f0f138729b2c48dd8Patch
- https://git.kernel.org/stable/c/552705a3650bbf46a22b1adedc1b04181490fc36Patch
- https://git.kernel.org/stable/c/b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1Patch
- https://git.kernel.org/stable/c/d75a589bb92af1abf3b779cfcd1977ca11b27033Patch
- https://git.kernel.org/stable/c/e2d45f467096e931044f0ab7634499879d851a5cPatch
- https://git.kernel.org/stable/c/edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bfPatch
- https://git.kernel.org/stable/c/291cca35818bd52a407bc37ab45a15816039e363Patch
- https://git.kernel.org/stable/c/406b0241d0eb598a0b330ab20ae325537d8d8163Patch
- https://git.kernel.org/stable/c/5224afbc30c3ca9ba23e752f0f138729b2c48dd8Patch
- https://git.kernel.org/stable/c/552705a3650bbf46a22b1adedc1b04181490fc36Patch
- https://git.kernel.org/stable/c/b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1Patch
- https://git.kernel.org/stable/c/d75a589bb92af1abf3b779cfcd1977ca11b27033Patch
- https://git.kernel.org/stable/c/e2d45f467096e931044f0ab7634499879d851a5cPatch
- https://git.kernel.org/stable/c/edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bfPatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.