CVE-2026-64379
7.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: mask server-provided mode to 07777 in modefromsid
When modefromsid is active, parse_dacl() applies the server-provided sub_auth[2] value from the NFS mode SID to cf_mode without masking to 07777. Apply the correct masking, same as in the read path.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < 5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14 | affected |
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < ee2216dbdf0c677e89bb43e03247dba590ed00ef | affected |
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < f511807feee7cb29b61bdfa86472c7e9e2e5df94 | affected |
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < 08c600b7e1818539ba5efee4cdb06215c245ca78 | affected |
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d | affected |
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < c6c484a7d5bff6b929a86d7ed5130f29834c6a0d | affected |
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < f80add1bfb3425100a325b14f19648e75669a954 | affected |
| Linux | Linux | e2f8fbfb8d09c06decde162090fac3ee220aa280 < e3d9c7160d483fc8f9e225aafad8ecbbc43f3151 | affected |
| Linux | Linux | 5.4 | affected |
| Linux | Linux | 0 < 5.4 | unaffected |
| Linux | Linux | 5.10.261 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.212 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.178 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.145 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.96 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.39 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.4 <= 7.1.* | unaffected |
| Linux | Linux | 7.2-rc3 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14
- https://git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00ef
- https://git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94
- https://git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78
- https://git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d
- https://git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0d
- https://git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954
- https://git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151
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