CVE-2025-38696In 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 kth…
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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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 19, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 4.14.77 before 4.15; from 4.18.15 before 4.19; from 4.19.1 before 5.4.297; from 5.5 before 5.10.241; from 5.11 before 5.15.190; from 5.16 before 6.1.149; from 6.2 before 6.6.103; from 6.7 before 6.12.43; and 4 more ranges | NVD |
debian debian_linux debian:debian_linux | 11.0 | NVD |
References
- https://git.kernel.org/stable/c/24d098b6f69b0aa806ffcb3e18259bee31650b28patch
- https://git.kernel.org/stable/c/5b6839b572b503609b9b58bc6c04a816eefa0794patch
- https://git.kernel.org/stable/c/82d140f6aab5e89a9d3972697a0dbe1498752d9bpatch
- https://git.kernel.org/stable/c/ab18e48a503230d675e824a0d68a108bdff42503patch
- https://git.kernel.org/stable/c/bd90dbd196831f5c2620736dc221db2634cf1e8epatch
- https://git.kernel.org/stable/c/cddf47d20b0325dc8a4e57b833fe96e8f36c42a4patch
- https://git.kernel.org/stable/c/e78033e59444d257d095b73ce5d20625294f6ec2patch
- https://git.kernel.org/stable/c/e9f4a6b3421e936c3ee9d74710243897d74dbaa2patch
- https://git.kernel.org/stable/c/f22de2027b206ddfb8a075800bb5d0dacf2da4b8patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlmailing-list, third-party-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.