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CVE-2026-23226

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add chann_lock to protect ksmbd_chann_list xarray ksmbd_chann_list xarray lacks synchronization, allowing use-after-free in multi-channel sessions (between lookup_chann_list() and ksmbd_chann_del). Adds rw_semaphore chann_lock to struct ksmbd_session and protects all xa_load/xa_store/xa_erase accesses.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3e4aa60f8a1486fe9b0427d1160ae98a2aa5bb5804d44f7d8af0752bd6f6944c
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":["fs/smb/server/mgmt/user_session.c","fs/smb/server/mgmt/user_session.h","fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4c2ca31608521895dd742a43beca4b4d29762345","status":"affected","version":"1d9c4172110e645b383ff13eee759728d74f1a5d","versionType":"git"},{"lessThan":"e4a8a96a93d08570e0405cfd989a8a07e5b6ff33","status":"affected","version":"1d9c4172110e645b383ff13eee759728d74f1a5d","versionType":"git"},{"lessThan":"36ef605c0395b94b826a8c8…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/mgmt/user_session.c","fs/smb/server/mgmt/user_session.h","fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.3"},{"lessThan":"6.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.77","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.11","versionType":"semver"},{"lessThanOrEqual":"6.19.*","sta…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/mgmt/user_session.c","fs/smb/server/mgmt/user_session.h","fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4c2ca31608521895dd742a43beca4b4d29762345","status":"affected","version":"1d9c4172110e645b383ff13eee759728d74f1a5d","versionType":"git"},{"lessThan":"e4a8a96a93d08570e0405cfd989a8a07e5b6ff33","status":"affected","version":"1d9c4172110e645b383ff13eee759728d74f1a5d","versionType":"git"},{"lessThan":"36ef605c0395b94b826a8c8…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/mgmt/user_session.c","fs/smb/server/mgmt/user_session.h","fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.3"},{"lessThan":"6.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.77","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.11","versionType":"semver"},{"lessThanOrEqual":"6.19.*","sta…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/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:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/36ef605c0395b94b826a8c8d6f2697071173de6e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/4c2ca31608521895dd742a43beca4b4d29762345"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/4f3a06cc57976cafa8c6f716646be6c79a99e485"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/e4a8a96a93d08570e0405cfd989a8a07e5b6ff33"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab5d691671b6f38c37fc278ce09067423fc7ecfccd46e5b8a6ea3865c934b169 · sha256:d9937871bc60d798… · /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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