CVE-2025-38696MIPS: Don't crash in stack_top() for tasks without ABI or vDSO
Updated under an hour ago ()
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It affects Linux and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- May 23, 2026
- First seen by InfoSec Signals
- Oct 19, 2026
Affected products
Linux Linux linux:linux (from the name) | from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before ab18e48a503230d675e824a0d68a108bdff42503; from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before e78033e59444d257d095b73ce5d20625294f6ec2; from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before bd90dbd196831f5c2620736dc221db2634cf1e8e; from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before 5b6839b572b503609b9b58bc6c04a816eefa0794; from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before f22de2027b206ddfb8a075800bb5d0dacf2da4b8; from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before 82d140f6aab5e89a9d3972697a0dbe1498752d9b; from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before 24d098b6f69b0aa806ffcb3e18259bee31650b28; from ea7e0480a4b695d0aa6b3fa99bd658a003122113 before cddf47d20b0325dc8a4e57b833fe96e8f36c42a4; and 5 more ranges | CNA record |
Siemens SIMATIC CN 4100 siemens:simatic_cn_4100 (from the name) | before V5.0 | CISA ADP |
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/ab18e48a503230d675e824a0d68a108bdff42503patch
- https://git.kernel.org/stable/c/e78033e59444d257d095b73ce5d20625294f6ec2patch
- https://git.kernel.org/stable/c/bd90dbd196831f5c2620736dc221db2634cf1e8epatch
- https://git.kernel.org/stable/c/5b6839b572b503609b9b58bc6c04a816eefa0794patch
- https://git.kernel.org/stable/c/f22de2027b206ddfb8a075800bb5d0dacf2da4b8patch
- https://git.kernel.org/stable/c/82d140f6aab5e89a9d3972697a0dbe1498752d9bpatch
- https://git.kernel.org/stable/c/24d098b6f69b0aa806ffcb3e18259bee31650b28patch
- https://git.kernel.org/stable/c/cddf47d20b0325dc8a4e57b833fe96e8f36c42a4patch
- https://git.kernel.org/stable/c/e9f4a6b3421e936c3ee9d74710243897d74dbaa2patch
- 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.