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CVE-2026-53262

In the Linux kernel, the following vulnerability has been resolved: l2tp: pppol2tp: hold reference to session in pppol2tp_ioctl() pppol2tp_ioctl() read sock->sk->sk_user_data directly without any locks or reference counting. If a controllable sleep was induced during copy_from_user() (e.g. via a userfaultfd page fault sleep), a concurrent socket close could trigger pppol2tp_session_close() asynchronously. This frees the l2tp_session structure via the l2tp_session_del_work workqueue. Upon res
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2148438ef28eaa51fd0e7907703e6388a685dd249e9479509555ac2ca81d06f9
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/l2tp/l2tp_ppp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.35"},{"lessThan":"2.6.35","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"semver"},{"lessThan…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/l2tp/l2tp_ppp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"78cdfdca88cbf731a92f3b9ee5427c633dd94e28","status":"affected","version":"fd558d186df2c13a22455373858bae634a4795af","versionType":"git"},{"lessThan":"e251d4cdfc725c9e7d686161e3b775a0e7d95053","status":"affected","version":"fd558d186df2c13a22455373858bae634a4795af","versionType":"git"},{"lessThan":"62f327e287cf7b595ae3f73ba72f5cd2a9e9f39f","status":"affected","version":"fd558d186df2c13a2245537385…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/l2tp/l2tp_ppp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.35"},{"lessThan":"2.6.35","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"semver"},{"lessThan…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/l2tp/l2tp_ppp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"78cdfdca88cbf731a92f3b9ee5427c633dd94e28","status":"affected","version":"fd558d186df2c13a22455373858bae634a4795af","versionType":"git"},{"lessThan":"e251d4cdfc725c9e7d686161e3b775a0e7d95053","status":"affected","version":"fd558d186df2c13a22455373858bae634a4795af","versionType":"git"},{"lessThan":"62f327e287cf7b595ae3f73ba72f5cd2a9e9f39f","status":"affected","version":"fd558d186df2c13a2245537385…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /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:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/62f327e287cf7b595ae3f73ba72f5cd2a9e9f39f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/78cdfdca88cbf731a92f3b9ee5427c633dd94e28"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/a213a8950414c684999dcf03edeea6c46ede172e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/e251d4cdfc725c9e7d686161e3b775a0e7d95053"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3afb1327e50e31d30c3db7427b6ac74739f0e3d2135bb46d81d0e4cc1bab6c1e · sha256:1923e767bb73430f… · /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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