by Kastro CVE-2025-37778
Linux Linux — ksmbd: Fix dangling pointer in krb_authenticate
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
Linux0626e6641f6b467447c81dd7678a69c66f7746cf – < b61f04d5d73c53d183019bafe22fb700a739bac5b61f04d5d73c53d183019bafe22fb700a739bac5CNA
Linux0626e6641f6b467447c81dd7678a69c66f7746cf – < d5b554bc8d554ed6ddf443d3db2fad9f665cec10d5b554bc8d554ed6ddf443d3db2fad9f665cec10CNA
Linux0626e6641f6b467447c81dd7678a69c66f7746cf – < 1db2451de23e98bc864c6a6e52aa0d82c91cb3251db2451de23e98bc864c6a6e52aa0d82c91cb325CNA
Linux0626e6641f6b467447c81dd7678a69c66f7746cf – < 6e30c0e10210c714f3d4453dc258d4abcc70364e6e30c0e10210c714f3d4453dc258d4abcc70364eCNA
Linux0626e6641f6b467447c81dd7678a69c66f7746cf – < e83e39a5f6a01a81411a4558a59a10f87aa88dd6e83e39a5f6a01a81411a4558a59a10f87aa88dd6CNA
Linux0626e6641f6b467447c81dd7678a69c66f7746cf – < 1e440d5b25b7efccb3defe542a73c51005799a5f1e440d5b25b7efccb3defe542a73c51005799a5fCNA
Linux5.155.15.203CNA
Scores by source
Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total