MIPS: Don't crash in stack_top() for tasks without ABI or vDSO
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.
- Published
- Sep 4, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 8th percentile
- CWE
- CWE-476
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- linux linux kernel4.18.15 and later · before 4.19
- linux linux kernel4.19.1 and later · before 5.4.297
- linux linux kernel5.5 and later · before 5.10.241
- linux linux kernel5.11 and later · before 5.15.190
- linux linux kernel5.16 and later · before 6.1.149
- linux linux kernel4.14.77 and later · before 4.15
- linux linux kernel6.7 and later · before 6.12.43
- linux linux kernel6.13 and later · before 6.15.11
- linux linux kernel6.16 and later · before 6.16.2
- linux linux kernel6.2 and later · before 6.6.103
- linux linux kernel4.19
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 86717a97f9218de798c6d33e0014ab9325e18f56, e4882348eaa9f5f052cb21d2a5aa99a063e4308b, 4.19affected
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before ab18e48a503230d675e824a0d68a108bdff42503affected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before e78033e59444d257d095b73ce5d20625294f6ec2affected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before bd90dbd196831f5c2620736dc221db2634cf1e8eaffected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before 5b6839b572b503609b9b58bc6c04a816eefa0794affected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before f22de2027b206ddfb8a075800bb5d0dacf2da4b8affected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before 82d140f6aab5e89a9d3972697a0dbe1498752d9baffected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before 24d098b6f69b0aa806ffcb3e18259bee31650b28affected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before cddf47d20b0325dc8a4e57b833fe96e8f36c42a4affected · git
- ea7e0480a4b695d0aa6b3fa99bd658a003122113 and later · before e9f4a6b3421e936c3ee9d74710243897d74dbaa2affected · git
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.153-1 | 6.1.153-1 |
| Debian:13 | linux | before 6.12.43-1 | 6.12.43-1 |
| Debian:14 | linux | before 6.16.3-1 | 6.16.3-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
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- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 24d098b6f69b0aa806ffcb3e18259bee31650b28 | Vendor (CNA) |
| Linux Linux | 4.15 | Vendor (CNA) |
| Linux Linux | 4.19 | Vendor (CNA) |
| Linux Linux | 5b6839b572b503609b9b58bc6c04a816eefa0794 | Vendor (CNA) |
| Linux Linux | 82d140f6aab5e89a9d3972697a0dbe1498752d9b | Vendor (CNA) |
| Linux Linux | ab18e48a503230d675e824a0d68a108bdff42503 | Vendor (CNA) |
| Linux Linux | bd90dbd196831f5c2620736dc221db2634cf1e8e | Vendor (CNA) |
| Linux Linux | cddf47d20b0325dc8a4e57b833fe96e8f36c42a4 | Vendor (CNA) |
| Linux Linux | e78033e59444d257d095b73ce5d20625294f6ec2 | Vendor (CNA) |
| Linux Linux | e9f4a6b3421e936c3ee9d74710243897d74dbaa2 | Vendor (CNA) |
| Linux Linux | f22de2027b206ddfb8a075800bb5d0dacf2da4b8 | Vendor (CNA) |
| azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 | 6.6.104.2-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| debian:linux | 6.1.153-1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/24d098b6f69b0aa806ffcb3e18259bee31650b28
- git.kernel.org/stable/c/5b6839b572b503609b9b58bc6c04a816eefa0794
- git.kernel.org/stable/c/82d140f6aab5e89a9d3972697a0dbe1498752d9b
- git.kernel.org/stable/c/ab18e48a503230d675e824a0d68a108bdff42503
- git.kernel.org/stable/c/bd90dbd196831f5c2620736dc221db2634cf1e8e
- git.kernel.org/stable/c/cddf47d20b0325dc8a4e57b833fe96e8f36c42a4
- git.kernel.org/stable/c/e78033e59444d257d095b73ce5d20625294f6ec2
- git.kernel.org/stable/c/e9f4a6b3421e936c3ee9d74710243897d74dbaa2
- git.kernel.org/stable/c/f22de2027b206ddfb8a075800bb5d0dacf2da4b8
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- cert-portal.siemens.com/productcert/html/ssa-032379.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.