drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code back to the caller. On failures, ttm will call nouveau_bo_del_ttm() and free the memory.Thus, when nouveau_bo_init() returns an error, the gem object has already been released. Then the call to nouveau_bo_ref() will use the freed "nvbo->bo" and lead to a use-after-free bug. We should delete the call to nouveau_bo_ref() to avoid the use-after-free.
- Published
- Oct 1, 2025
- Updated
- Aug 5, 2026
- EPSS
- 0.2% · 5th percentile
- CWE
- CWE-416
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CNA vs NVD score
- NVD
- 7.8
- CNA · Linux
- 7.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
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 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel5.4 and later · before 5.4.220
- linux linux kernel5.5 and later · before 5.10.150
- linux linux kernel5.11 and later · before 5.15.75
- linux linux kernel5.16 and later · before 5.19.17
- linux linux kernel6.0 and later · before 6.0.3
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
- 5.4affected
- 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 and later · before 56ee9577915dc06f55309901012a9ef68dbdb5a8affected · git
- 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 and later · before 5d6093c49c098d86c7b136aba9922df44aeb6944affected · git
- 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 and later · before 861f085f81fd569b02cc2c11165a9e6cca144424affected · git
- 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 and later · before 3aeda2fe6517cc52663d4ce3588dd43f0d4124a7affected · git
- 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 and later · before 7d80473e9f12548ac05b36af4fb9ce80f2f73509affected · git
- 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 and later · before 540dfd188ea2940582841c1c220bd035a7db0e51affected · git
- before 5.4not affected · semver
- 5.4.220 and later · up to and including 5.4.*not affected · semver
- 5.10.150 and later · up to and including 5.10.*not affected · semver
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 6.0.3-1 | 6.0.3-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- 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 | 3aeda2fe6517cc52663d4ce3588dd43f0d4124a7 | Vendor (CNA) |
| Linux Linux | 540dfd188ea2940582841c1c220bd035a7db0e51 | Vendor (CNA) |
| Linux Linux | 56ee9577915dc06f55309901012a9ef68dbdb5a8 | Vendor (CNA) |
| Linux Linux | 5d6093c49c098d86c7b136aba9922df44aeb6944 | Vendor (CNA) |
| Linux Linux | 7d80473e9f12548ac05b36af4fb9ce80f2f73509 | Vendor (CNA) |
| Linux Linux | 861f085f81fd569b02cc2c11165a9e6cca144424 | Vendor (CNA) |
| debian:linux | 6.0.3-1 · 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
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-416 · Use After FreeCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Root cause
After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.
The bug in code
The whole CWE-416 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
free(dev->buf);/* ... another thread is still running ... */process(dev->buf);Fixed
lock(&dev->lock);free(dev->buf);dev->buf = NULL;unlock(&dev->lock);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/3aeda2fe6517cc52663d4ce3588dd43f0d4124a7
- git.kernel.org/stable/c/540dfd188ea2940582841c1c220bd035a7db0e51
- git.kernel.org/stable/c/56ee9577915dc06f55309901012a9ef68dbdb5a8
- git.kernel.org/stable/c/5d6093c49c098d86c7b136aba9922df44aeb6944
- git.kernel.org/stable/c/7d80473e9f12548ac05b36af4fb9ce80f2f73509
- git.kernel.org/stable/c/861f085f81fd569b02cc2c11165a9e6cca144424
Vendor advisories and official records. Exploit/PoC links are deliberately left out.