CVE-2025-37778

HIGH EPSS 37.3%
Published May 1, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 1, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
37.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.1.135
linuxlinux_kernel*≥6.2  –  <6.6.88
linuxlinux_kernel*≥6.7  –  <6.12.25
linuxlinux_kernel*≥6.13  –  <6.14.4
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
debiandebian_linux11.0any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b61f04d5d73c53d183019bafe22fb700a739bac5
  • git.kernel.org https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6
    Patch