Answer in brief
CVE-2025-37778 records a Critical severity (CVSS 9.8) vulnerability in ksmbd: Fix dangling pointer in krb_authenticate. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0626e6641f6b467447c81dd7678a69c66f7746cf <b61f04d5d73c53d183019bafe22fb700a739bac5 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <d5b554bc8d554ed6ddf443d3db2fad9f665cec10 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <1db2451de23e98bc864c6a6e52aa0d82c91cb325 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <6e30c0e10210c714f3d4453dc258d4abcc70364e || >=0626e6641f6b467447c81dd7678a69c66f7746cf <e83e39a5f6a01a81411a4558a59a10f87aa88dd6 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <1e440d5b25b7efccb3defe542a73c51005799a5f | b61f04d5d73c53d183019bafe22fb700a739bac5, d5b554bc8d554ed6ddf443d3db2fad9f665cec10, 1db2451de23e98bc864c6a6e52aa0d82c91cb325, 6e30c0e10210c714f3d4453dc258d4abcc70364e, e83e39a5f6a01a81411a4558a59a10f87aa88dd6, 1e440d5b25b7efccb3defe542a73c51005799a5f |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
May 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.