CVE-2025-37778

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix dangling pointer in krb_authenticate krb_authenticate frees sess->user and does not set the pointer to NULL. It calls ksmbd_krb5_authenticate to reinitialise sess->user but that function may return without doing so. If that happens then smb2_sess_setup, which calls krb_authenticate, will be accessing free'd memory when it later uses sess->user.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2025-05-01

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• linux:linux_kernel

References

• https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325
• https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f
• https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e
• https://git.kernel.org/stable/c/b61f04d5d73c53d183019bafe22fb700a739bac5
• https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10

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