CVE-2025-38696

MEDIUM EPSS 6.7%
Published Sep 4, 202510mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 4, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: MIPS: Don't crash in stack_top() for tasks without ABI or vDSO Not all tasks have an ABI associated or vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefence the NULL ABI pointer and crash. This can for example happen when using kunit: mips_stack_top+0x28/0xc0 arch_pick_mmap_layout+0x190/0x220 kunit_vm_mmap_init+0xf8/0x138 __kunit_add_resource+0x40/0xa8 kunit_vm_mmap+0x88/0xd8 usercopy_test_init+0xb8/0x240 kunit_try_run_case+0x5c/0x1a8 kunit_generic_run_threadfn_adapter+0x28/0x50 kthread+0x118/0x240 ret_from_kernel_thread+0x14/0x1c Only dereference the ABI point if it is set. The GIC page is also included as it is specific to the vDSO. Also move the randomization adjustment into the same conditional.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
6.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥4.14.77  –  <4.15
linuxlinux_kernel*≥4.18.15  –  <4.19
linuxlinux_kernel*≥4.19.1  –  <5.4.297
linuxlinux_kernel*≥5.5  –  <5.10.241
linuxlinux_kernel*≥5.11  –  <5.15.190
linuxlinux_kernel*≥5.16  –  <6.1.149
linuxlinux_kernel*≥6.2  –  <6.6.103
linuxlinux_kernel*≥6.7  –  <6.12.43
linuxlinux_kernel*≥6.13  –  <6.15.11
linuxlinux_kernel*≥6.16  –  <6.16.2
linuxlinux_kernel4.19any
linuxlinux_kernel4.19any
debiandebian_linux11.0any

References 11

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • git.kernel.org https://git.kernel.org/stable/c/24d098b6f69b0aa806ffcb3e18259bee31650b28
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b6839b572b503609b9b58bc6c04a816eefa0794
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82d140f6aab5e89a9d3972697a0dbe1498752d9b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab18e48a503230d675e824a0d68a108bdff42503
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd90dbd196831f5c2620736dc221db2634cf1e8e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cddf47d20b0325dc8a4e57b833fe96e8f36c42a4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e78033e59444d257d095b73ce5d20625294f6ec2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9f4a6b3421e936c3ee9d74710243897d74dbaa2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f22de2027b206ddfb8a075800bb5d0dacf2da4b8
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/24d098b6f69b0aa806ffcb3e18259bee31650b28
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b6839b572b503609b9b58bc6c04a816eefa0794
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82d140f6aab5e89a9d3972697a0dbe1498752d9b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab18e48a503230d675e824a0d68a108bdff42503
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd90dbd196831f5c2620736dc221db2634cf1e8e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cddf47d20b0325dc8a4e57b833fe96e8f36c42a4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e78033e59444d257d095b73ce5d20625294f6ec2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9f4a6b3421e936c3ee9d74710243897d74dbaa2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f22de2027b206ddfb8a075800bb5d0dacf2da4b8
    Patch