CVE Explorer

CVE-2026-43303

In the Linux kernel, the following vulnerability has been resolved: mm/page_alloc: clear page->private in free_pages_prepare() Several subsystems (slub, shmem, ttm, etc.) use page->private but don't clear it before freeing pages. When these pages are later allocated as high-order pages and split via split_page(), tail pages retain stale page->private values. This causes a use-after-free in the swap subsystem. The swap code uses page->private to track swap count continuations, assuming fresh

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8a1b8926d94a5e83680ef548a5ded688657cc3562eb3173c4f4017c4b8f453a1

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/page_alloc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e7790ab165713b79b1617ce659742ceb3a859d05","status":"affected","version":"3b8000ae185cb068adbda5f966a3835053c85fd4","versionType":"git"},{"lessThan":"3edb8ebbf79b9016040e8f3421d723ae3d542b32","status":"affected","version":"3b8000ae185cb068adbda5f966a3835053c85fd4","versionType":"git"},{"lessThan":"f9719e32a67b4b00b3c9b133e8b5ffa72a26b67b","status":"affected","version":"3b8000ae185cb068adbda5f966a383…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["mm/page_alloc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.18"},{"lessThan":"5.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual"…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /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:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/metrics/0/cvssV3_1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/23b82b7a26182ad840ae67d390d7ec9771e8c00f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/3edb8ebbf79b9016040e8f3421d723ae3d542b32"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/ac1ea219590c09572ed5992dc233bbf7bb70fef9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/d757c793853ec5483eb41ec2942c300b8fa720fb"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/e7790ab165713b79b1617ce659742ceb3a859d05"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/f9719e32a67b4b00b3c9b133e8b5ffa72a26b67b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:151be0fc5b5ad69f74561f685ad0e1a933d2612938c9e041b2b44dd798403973 · sha256:29c3680863645d31… · /containers/cna/references/2

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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