mtd: afs: validate v2 image info bounds
In the Linux kernel, the following vulnerability has been resolved: mtd: afs: validate v2 image info bounds The AFS v2 parser uses footer[8] to locate the image information block inside the current erase block, then uses the image information region_count to walk entries from a fixed local array. The footer offset and region count come from flash contents and are not checked against the erase block or the local image-info array before use. Reject v2 entries whose image information offset would underflow the erase block calculation, and reject region counts that cannot fit in the local image-info array before walking region entries.
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- EPSS
- 0.2% · 8th percentile
- CWE
- —
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Report tools
Action score
32
Monitor
Low priority for now.
- CVSS
- 32 / 40 · 8.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 8.0
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
—
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
- 5.2affected
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before 1bec05a68414cf8d0cab6cb42445b8603f32ffc4affected · git
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348affected · git
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before 875daa3c750814ff2e2dc050239c390048f0bcd0affected · git
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before da740539e8f370767317e24615349b9342a6e773affected · git
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before 1edea8900ca3e405c1421d8b5c29f97107874f72affected · git
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before 18916f475057cbd2fb8ea6ae86e6b85884ad1d53affected · git
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before d14e6298139f58a87a87d7022e26a7f37f0ddce7affected · git
- b7cf5e2830bbb128699d7635ce8404b7f605bc95 and later · before e9290031f736e99ad17c25c00311c92c266843b7affected · git
- before 5.2not 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 | all versions | — |
| Debian:13 | linux | before 6.12.111-1 | 6.12.111-1 |
| Debian:14 | linux | before 7.2.6-1 | 7.2.6-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
- CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler40Plan
- CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index40Plan
- CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index40Plan
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 | 18916f475057cbd2fb8ea6ae86e6b85884ad1d53 | Vendor (CNA) |
| Linux Linux | 1bec05a68414cf8d0cab6cb42445b8603f32ffc4 | Vendor (CNA) |
| Linux Linux | 1edea8900ca3e405c1421d8b5c29f97107874f72 | Vendor (CNA) |
| Linux Linux | 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348 | Vendor (CNA) |
| Linux Linux | 875daa3c750814ff2e2dc050239c390048f0bcd0 | Vendor (CNA) |
| Linux Linux | d14e6298139f58a87a87d7022e26a7f37f0ddce7 | Vendor (CNA) |
| Linux Linux | da740539e8f370767317e24615349b9342a6e773 | Vendor (CNA) |
| Linux Linux | e9290031f736e99ad17c25c00311c92c266843b7 | Vendor (CNA) |
| debian:linux | 6.12.111-1 · Debian:13 | 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.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- Low
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
nvd-secondary
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.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; 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 helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/18916f475057cbd2fb8ea6ae86e6b85884ad1d53
- git.kernel.org/stable/c/1bec05a68414cf8d0cab6cb42445b8603f32ffc4
- git.kernel.org/stable/c/1edea8900ca3e405c1421d8b5c29f97107874f72
- git.kernel.org/stable/c/3ad8ff12fd44b08af9212ac4883a7e29d2ab7348
- git.kernel.org/stable/c/875daa3c750814ff2e2dc050239c390048f0bcd0
- git.kernel.org/stable/c/d14e6298139f58a87a87d7022e26a7f37f0ddce7
- git.kernel.org/stable/c/da740539e8f370767317e24615349b9342a6e773
- git.kernel.org/stable/c/e9290031f736e99ad17c25c00311c92c266843b7
Vendor advisories and official records. Exploit/PoC links are deliberately left out.