smb: client: mask server-provided mode to 07777 in modefromsid
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78https://git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14https://git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7dhttps://git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0dhttps://git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151https://git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00efhttps://git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94https://git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954