CVE Explorer

CVE-2026-63875

In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When huge_pmd_unshare() is called to unshare a PMD table, the tlb_unshare_pmd_ptdesc() function sets tlb->unshared_tables=true but the aarch64 tlb_flush() only checked tlb->freed_tables to determine whether to use TLBF_NONE (vae1is, invalidates walk cache) or TLBF_NOWALKCACHE (vale1is, leaf-only). This caused the stale PMD page table entry to remain in the walk cache afte

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ee4cd58594cf37d883d1884dffccfd43555bb0c4bda891d1eace334a85d52d2f

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":["arch/arm64/include/asm/tlb.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dced308d7d6a0de1c09d2058f38f1aaaf5cbb914","status":"affected","version":"6495204f8219a57859669d618b25d06176d5a872","versionType":"git"},{"lessThan":"47490bbb05c8c0e09cc3cfd237d8934ffc340583","status":"affected","version":"ce4cf24761467756462c0e1dbe4a5e9c9eb520fc","versionType":"git"},{"lessThan":"0199c9d57861f17b556b6cba1f765c7cce79745b","status":"affected","version":"daa6707b71a2da23a…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/arm64/include/asm/tlb.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /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:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions

{"url":"https://git.kernel.org/stable/c/0199c9d57861f17b556b6cba1f765c7cce79745b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/47490bbb05c8c0e09cc3cfd237d8934ffc340583"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/48125cd9c55cbe297b59fd1f9bda48b0960bd181"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/6

{"url":"https://git.kernel.org/stable/c/8ca7284da0e67b3e71d90ec17f08286774245ad9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/c2ff4764e03e7a8d758352f4aceb8fe1be6ac971"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/7

{"url":"https://git.kernel.org/stable/c/d766a49d9b55705c4737cd8bb5d3faa2d31330fd"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/dced308d7d6a0de1c09d2058f38f1aaaf5cbb914"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/fe93e907b1af03cc229a80aa64a570a103d2b279"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:950d26448420a523637b8b9c623a293e08826c3f70736039fbcc1e69ae90ee86 · sha256:ab9a6ef50681c4f2… · /containers/cna/references/5

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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