Review reviewHigh

CVE-2025-38051

Linux Linux, debian linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix use-after-free in cifs_fill_dirent There is a race condition in the readdir concurrency process, which may access the rsp buffer after it has been released, triggering the following KASAN warning. ================================================================== BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs] Read of size 4 at addr ffff8880099b819c by task a.out/342975 CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full) Hardware name: QEMU Standard PC (i4...

CVSS
7
EPSS
0.18%
8.15% percentile
CISA KEV
Not listed
Published
2025.06.18
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.18%
Technical severityCVSS 7

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix use-after-free in cifs_fill_dirent There is a race condition in the readdir concurrency process, which may access the rsp buffer after it has been released, triggering the following KASAN warning. ================================================================== BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs] Read of size 4 at addr ffff8880099b819c by task a.out/342975 CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full) Hardware name: QEMU Standard PC (i4...

Affected product and versions

Product
Linux Linux, debian linux, linux kernel
Affected versions
>= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < aee067e88d61eb72e966f094e4749c6b14e7008f, >= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < a24c2f05ac3c5b0aaa539d9d913826d2643dfd0e, >= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < 1b197931fbc821bc7e9e91bf619400db563e3338, >= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < c8623231e0edfcccb7cc6add0288fa0f0594282f, >= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < 73cadde98f67f76c5eba00ac0b72c453383cec8b, >= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < 9bea368648ac46f8593a780760362e40291d22a9, >= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < 9c9aafbacc183598f064902365e107b5e856531f, >= a364bc0b37f14ffd66c1f982af42990a9d77fa43 < a7a8fe56e932a36f43e031b398aef92341bf5ea0, >= 0f3da51e7046e2eb28992ba65c22d058f571356c, >= 2.6.27.4 < 2.6.28, >= 2.6.28, 11.0, >= 2.6.27.4 < 5.4.294, >= 5.5 < 5.10.238, >= 5.11 < 5.15.185, >= 5.16 < 6.1.141, >= 6.2 < 6.6.93, >= 6.7 < 6.12.31, >= 6.13 < 6.14.9, 6.15
Fixed versions
5.4.294, 5.10.238, 5.15.185, 6.1.141, 6.6.93, 6.12.31, 6.14.9

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, debian linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416