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CVE-2026-53020

In the Linux kernel, the following vulnerability has been resolved: um: Fix potential race condition in TLB sync During the TLB sync, we need to traverse and modify the page table, so we should hold the page table lock. Since full SMP support for threads within the same process is still missing, let's disable the split page table lock for simplicity.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cd2796eb199d82fb9b7a9ef083739b7c72eb9ad23d392f1558770186d295a41f
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":["arch/um/kernel/tlb.c","mm/Kconfig"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f21c343ec7419377bff89ab11146c03ae117036f","status":"affected","version":"1e4ee5135d814fe4785890790cec81c3132888fb","versionType":"git"},{"lessThan":"102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3","status":"affected","version":"1e4ee5135d814fe4785890790cec81c3132888fb","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:262ec14feea6345ef6afd6f4f00b6518741fa051f1773841812a271a58190cf0 · sha256:5f2f562c830d6679… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/um/kernel/tlb.c","mm/Kconfig"],"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":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:262ec14feea6345ef6afd6f4f00b6518741fa051f1773841812a271a58190cf0 · sha256:5f2f562c830d6679… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/um/kernel/tlb.c","mm/Kconfig"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f21c343ec7419377bff89ab11146c03ae117036f","status":"affected","version":"1e4ee5135d814fe4785890790cec81c3132888fb","versionType":"git"},{"lessThan":"102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3","status":"affected","version":"1e4ee5135d814fe4785890790cec81c3132888fb","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:262ec14feea6345ef6afd6f4f00b6518741fa051f1773841812a271a58190cf0 · sha256:5f2f562c830d6679… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/um/kernel/tlb.c","mm/Kconfig"],"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":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:262ec14feea6345ef6afd6f4f00b6518741fa051f1773841812a271a58190cf0 · sha256:5f2f562c830d6679… · /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:v2:262ec14feea6345ef6afd6f4f00b6518741fa051f1773841812a271a58190cf0 · sha256:5f2f562c830d6679… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:262ec14feea6345ef6afd6f4f00b6518741fa051f1773841812a271a58190cf0 · sha256:5f2f562c830d6679… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/f21c343ec7419377bff89ab11146c03ae117036f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:262ec14feea6345ef6afd6f4f00b6518741fa051f1773841812a271a58190cf0 · sha256:5f2f562c830d6679… · /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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