9.8

CVE-2026-31478

ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()

After this commit (e2b76ab8b5c9 "ksmbd: add support for read compound"),
response buffer management was changed to use dynamic iov array.
In the new design, smb2_calc_max_out_buf_len() expects the second
argument (hdr2_len) to be the offset of ->Buffer field in the
response structure, not a hardcoded magic number.
Fix the remaining call sites to use the correct offsetof() value.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 5.15.145 < 5.15.203
LinuxLinux Kernel Version >= 6.1.71 < 6.1.168
LinuxLinux Kernel Version >= 6.6.1 < 6.6.131
LinuxLinux Kernel Version >= 6.7 < 6.12.80
LinuxLinux Kernel Version >= 6.13 < 6.18.21
LinuxLinux Kernel Version >= 6.19 < 6.19.11
LinuxLinux Kernel Version6.6 Update-
LinuxLinux Kernel Version7.0 Updaterc1
LinuxLinux Kernel Version7.0 Updaterc2
LinuxLinux Kernel Version7.0 Updaterc3
LinuxLinux Kernel Version7.0 Updaterc4
LinuxLinux Kernel Version7.0 Updaterc5
LinuxLinux Kernel Version7.0 Updaterc6
LinuxLinux Kernel Version7.0 Updaterc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.09% 0.251
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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