CVE-2026-64379High· 7.1▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 27.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
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.
linux_kernel >= 5.4, < 5.10.261linux_kernel >= 5.11, < 5.15.212linux_kernel >= 5.16, < 6.1.178linux_kernel >= 6.2, < 6.6.145linux_kernel >= 6.7, < 6.12.96linux_kernel >= 6.13, < 6.18.39linux_kernel >= 6.19, < 7.1.4linux_kernel = 7.2Upgrade past the affected range:
linux_kernel 7.1.4Connected by shared product, vendor, weakness, or advisory.
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