MIPS: Don't crash in stack_top() for tasks without ABI or vDSO (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.19 % · percentile 8 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
- https://git.kernel.org/stable/c/ab18e48a503230d675e824a0d68a108bdff42503
- https://git.kernel.org/stable/c/e78033e59444d257d095b73ce5d20625294f6ec2
- https://git.kernel.org/stable/c/bd90dbd196831f5c2620736dc221db2634cf1e8e
- https://git.kernel.org/stable/c/5b6839b572b503609b9b58bc6c04a816eefa0794
- https://git.kernel.org/stable/c/f22de2027b206ddfb8a075800bb5d0dacf2da4b8
- https://git.kernel.org/stable/c/82d140f6aab5e89a9d3972697a0dbe1498752d9b
- https://git.kernel.org/stable/c/24d098b6f69b0aa806ffcb3e18259bee31650b28
- https://git.kernel.org/stable/c/cddf47d20b0325dc8a4e57b833fe96e8f36c42a4
- https://git.kernel.org/stable/c/e9f4a6b3421e936c3ee9d74710243897d74dbaa2
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2025-26773
- GCVE · GCVE-0-2025-38696
CERT-FR advisories
- CERTFR-2026-AVI-0565 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0246 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0227 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0218 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0194 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0169 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1135 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1075 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0894 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0825 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.14.77 < 4.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.18.15 < 4.19cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19.1 < 5.4.297cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.241cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.190cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.149cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.103cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.43cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.15.11cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.16 < 6.16.2cpe:2.3:o:linux:linux_kernel:4.19:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.19:rc8:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected ea7e0480a4b695d0aa6b3fa99bd658a003122113 < ab18e48a503230d675e824a0d68a108bdff42503 ; affected ea7e0480a4b695d0aa6b3fa99bd658a003122113 < e78033e59444d257d095b73ce5d20625294f6ec2 ; affected ea7e0480a4b695d0aa6b3fa99bd658a003122113 < bd90dbd196831f5c2620736dc221db2634cf1e8e ; affected ea7e0480a4b695d0aa6b3fa99bd658a003122113 < 5b6839b572b503609b9b58bc6c04a816eefa0794 ; affected ea7e0480a4b695d0aa6b3fa99bd658a003122113 < f22de2027b206ddfb8a075800bb5d0dacf2da4b8 ; affected ea7e0480a4b695d0aa6b3fa99bd658a003122113 < 82d140f6aab5e89a9d3972697a0dbe1498752d9b |
| Linux · Linux | affected 4.19 ; unaffected 0 < 4.19 ; unaffected 5.4.297 ≤ 5.4.* ; unaffected 5.10.241 ≤ 5.10.* ; unaffected 5.15.190 ≤ 5.15.* ; unaffected 6.1.149 ≤ 6.1.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |