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CVE-2026-23437

In the Linux kernel, the following vulnerability has been resolved: net: shaper: protect late read accesses to the hierarchy We look up a netdev during prep of Netlink ops (pre- callbacks) and take a ref to it. Then later in the body of the callback we take its lock or RCU which are the actual protections. This is not proper, a conversion from a ref to a locked netdev must include a liveness check (a check if the netdev hasn't been unregistered already). Fix the read cases (those under RCU).
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:079a09b41cac9109fbbf242444a43d25c774fd283872027d7ecb66f74357f638
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["net/shaper/shaper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/shaper/shaper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"581eee0890a8bde44f1fb78ad3e70502a897d583","status":"affected","version":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb","versionType":"git"},{"lessThan":"348758ba74e6a348299965b16a97cfb817545cc0","status":"affected","version":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb","versionType":"git"},{"lessThan":"0f9ea7141f365b4f27226898e62220fb98ef8dc6","status":"affected","version":"4b623f9f0f59652ea71fcb27d6…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/shaper/shaper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/shaper/shaper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"581eee0890a8bde44f1fb78ad3e70502a897d583","status":"affected","version":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb","versionType":"git"},{"lessThan":"348758ba74e6a348299965b16a97cfb817545cc0","status":"affected","version":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb","versionType":"git"},{"lessThan":"0f9ea7141f365b4f27226898e62220fb98ef8dc6","status":"affected","version":"4b623f9f0f59652ea71fcb27d6…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/0f9ea7141f365b4f27226898e62220fb98ef8dc6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/348758ba74e6a348299965b16a97cfb817545cc0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/581eee0890a8bde44f1fb78ad3e70502a897d583"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:059561b81c57c5dea22ea4076834a9ed7820c24e5becfa0651209336aa4a182a · sha256:9c48a7824297a5fb… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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