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CVE-2026-23192

In the Linux kernel, the following vulnerability has been resolved: linkwatch: use __dev_put() in callers to prevent UAF After linkwatch_do_dev() calls __dev_put() to release the linkwatch reference, the device refcount may drop to 1. At this point, netdev_run_todo() can proceed (since linkwatch_sync_dev() sees an empty list and returns without blocking), wait for the refcount to become 1 via netdev_wait_allrefs_any(), and then free the device via kobject_put(). This creates a use-after-free
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:64434e3cf07b008a84fc424934a8e7f003bb5d467ffe1d9c188a9c6b043c09cf
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/core/link_watch.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c1357ceab9c2787ba37eed7444ebe7e7921a6818c81655cfef18d53c87a81862 · sha256:fc1cfe254bb49945… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/core/link_watch.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2718ae6af7445ba2ee0abf6365ca43a9a3b16aeb","status":"affected","version":"04efcee6ef8d0f01eef495db047e7216d6e6e38f","versionType":"git"},{"lessThan":"83b67cc9be9223183caf91826d9c194d7fb128fa","status":"affected","version":"04efcee6ef8d0f01eef495db047e7216d6e6e38f","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c1357ceab9c2787ba37eed7444ebe7e7921a6818c81655cfef18d53c87a81862 · sha256:fc1cfe254bb49945… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/core/link_watch.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c1357ceab9c2787ba37eed7444ebe7e7921a6818c81655cfef18d53c87a81862 · sha256:fc1cfe254bb49945… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/core/link_watch.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2718ae6af7445ba2ee0abf6365ca43a9a3b16aeb","status":"affected","version":"04efcee6ef8d0f01eef495db047e7216d6e6e38f","versionType":"git"},{"lessThan":"83b67cc9be9223183caf91826d9c194d7fb128fa","status":"affected","version":"04efcee6ef8d0f01eef495db047e7216d6e6e38f","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c1357ceab9c2787ba37eed7444ebe7e7921a6818c81655cfef18d53c87a81862 · sha256:fc1cfe254bb49945… · /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:c1357ceab9c2787ba37eed7444ebe7e7921a6818c81655cfef18d53c87a81862 · sha256:fc1cfe254bb49945… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/2718ae6af7445ba2ee0abf6365ca43a9a3b16aeb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c1357ceab9c2787ba37eed7444ebe7e7921a6818c81655cfef18d53c87a81862 · sha256:fc1cfe254bb49945… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/83b67cc9be9223183caf91826d9c194d7fb128fa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c1357ceab9c2787ba37eed7444ebe7e7921a6818c81655cfef18d53c87a81862 · sha256:fc1cfe254bb49945… · /containers/cna/references/1

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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