CVE Explorer

CVE-2026-31704

In the Linux kernel, the following vulnerability has been resolved: ksmbd: use check_add_overflow() to prevent u16 DACL size overflow set_posix_acl_entries_dacl() and set_ntacl_dacl() accumulate ACE sizes in u16 variables. When a file has many POSIX ACL entries, the accumulated size can wrap past 65535, causing the pointer arithmetic (char *)pndace + *size to land within already-written ACEs. Subsequent writes then overwrite earlier entries, and pndacl->size gets a truncated value. Use check_

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cfea58511572b44bd937cb2de3cbd65684a3dd73f2be268449f70fa63e569f38

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":["fs/smb/server/smbacl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"41e53a773db6342ac9a689ee5ba635c31744c9f0","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"8d5729350b236896f51379588d9a690b7fafb8db","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"e1955a94b6f17f4b058afa955a6f187eb3ed7615","status":"affected","version":"e2f34481b24db2fd634b5ed…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/smbacl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.136","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.84","versionType":"semver"},{"lessThanO…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/affected/1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/299f962c0b02d048fb45d248b4da493d03f3175d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/41e53a773db6342ac9a689ee5ba635c31744c9f0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/5e7b8f3c539d69b2ed5f2408e2f75e68ce7eef43"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/8d5729350b236896f51379588d9a690b7fafb8db"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/e1955a94b6f17f4b058afa955a6f187eb3ed7615"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/ef7902be3f215b6bf7babe4dc9dd9a7d57dad7a7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2b2e91f7308c2d40e9e867bc802be9f4850c40ab4085c28d67bba2e7b510a24f · sha256:7421abc95440f490… · /containers/cna/references/4

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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