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CVE-2026-23415

In the Linux kernel, the following vulnerability has been resolved: futex: Fix UaF between futex_key_to_node_opt() and vma_replace_policy() During futex_key_to_node_opt() execution, vma->vm_policy is read under speculative mmap lock and RCU. Concurrently, mbind() may call vma_replace_policy() which frees the old mempolicy immediately via kmem_cache_free(). This creates a race where __futex_key_to_node() dereferences a freed mempolicy pointer, causing a use-after-free read of mpol->mode. [ 1
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5ac8d269393f1ec2a94961a7cde9a025611561d72c9e1359d5b4284027497469
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":"unaffected","product":"Linux","programFiles":["include/linux/mempolicy.h","kernel/futex/core.c","mm/mempolicy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"853f70c67d1b37e368fdcb3e328c4b8c04f53ac0","status":"affected","version":"c042c505210dc3453f378df432c10fff3d471bc5","versionType":"git"},{"lessThan":"7e196194ea27bd49adf3551e2aceb83498eb73fe","status":"affected","version":"c042c505210dc3453f378df432c10fff3d471bc5","versionType":"git"},{"lessThan":"190a8c48ff623c3d67cb295b4536a660db2012aa","status":"af…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["include/linux/mempolicy.h","kernel/futex/core.c","mm/mempolicy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0",…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/linux/mempolicy.h","kernel/futex/core.c","mm/mempolicy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"853f70c67d1b37e368fdcb3e328c4b8c04f53ac0","status":"affected","version":"c042c505210dc3453f378df432c10fff3d471bc5","versionType":"git"},{"lessThan":"7e196194ea27bd49adf3551e2aceb83498eb73fe","status":"affected","version":"c042c505210dc3453f378df432c10fff3d471bc5","versionType":"git"},{"lessThan":"190a8c48ff623c3d67cb295b4536a660db2012aa","status":"af…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["include/linux/mempolicy.h","kernel/futex/core.c","mm/mempolicy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0",…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /containers/cna/affected/1

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:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/190a8c48ff623c3d67cb295b4536a660db2012aa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/7e196194ea27bd49adf3551e2aceb83498eb73fe"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/853f70c67d1b37e368fdcb3e328c4b8c04f53ac0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:20c58224d7cc5bcf41abc2326ee6cad2b7c26c33cd1aa0b746037390a9955665 · sha256:eebe871104779def… · /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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