CVE-2025-38112

MEDIUM EPSS 2.1%
Published Jul 3, 202512mo ago · Modified Jun 17, 20261w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Jul 3, 2025 12mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net: Fix TOCTOU issue in sk_is_readable() sk->sk_prot->sock_is_readable is a valid function pointer when sk resides in a sockmap. After the last sk_psock_put() (which usually happens when socket is removed from sockmap), sk->sk_prot gets restored and sk->sk_prot->sock_is_readable becomes NULL. This makes sk_is_readable() racy, if the value of sk->sk_prot is reloaded after the initial check. Which in turn may lead to a null pointer dereference. Ensure the function pointer does not turn NULL after the check.

CVSS Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-367

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥4.17  –  <5.10.239
linuxlinux_kernel*≥5.11  –  <5.15.186
linuxlinux_kernel*≥5.16  –  <6.1.142
linuxlinux_kernel*≥6.2  –  <6.6.94
linuxlinux_kernel*≥6.7  –  <6.12.34
linuxlinux_kernel*≥6.13  –  <6.15.3
linuxlinux_kernel6.16any
debiandebian_linux11.0any

References 9

  • git.kernel.org https://git.kernel.org/stable/c/1b367ba2f94251822577daed031d6b9a9e11ba91
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e0de7582ceccbdbb227d4e0ddf65732f92526da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2660a544fdc0940bba15f70508a46cf9a6491230
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fa68d7eab34d448a61aa24ea31e68b3231ed20d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8926a7ef1977a832dd6bf702f1a99303dbf15b15
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c2b26638476baee154920bb587fc94ff1bf04336
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff55c85a923e043d59d26b20a673a1b4a219c310
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Third Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Third Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1b367ba2f94251822577daed031d6b9a9e11ba91
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e0de7582ceccbdbb227d4e0ddf65732f92526da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2660a544fdc0940bba15f70508a46cf9a6491230
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fa68d7eab34d448a61aa24ea31e68b3231ed20d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8926a7ef1977a832dd6bf702f1a99303dbf15b15
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c2b26638476baee154920bb587fc94ff1bf04336
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff55c85a923e043d59d26b20a673a1b4a219c310
    Patch