batman-adv: dat: acquire ARP hw source only after skb realloc
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: acquire ARP hw source only after skb realloc The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free.
- Published
- Aug 28, 2026
- Updated
- Aug 29, 2026
- EPSS
- 0.7% · 53th percentile
- CWE
- —
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Report tools
Action score
39
Monitor
Low priority for now.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.7%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 9.8
- 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.
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
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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
- 5.1affected
- b61ec31c85756bbc898fb892555509afe709459a and later · before a82fc217cb7a447313c76ebf9f09b100771b0ddfaffected · git
- b61ec31c85756bbc898fb892555509afe709459a and later · before 86aa79b43e5b561fd3648891165bd7313b541315affected · git
- b61ec31c85756bbc898fb892555509afe709459a and later · before d755cd001fa2c248e186c1fc3df3d11d97dc843caffected · git
- b61ec31c85756bbc898fb892555509afe709459a and later · before 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146affected · git
- b61ec31c85756bbc898fb892555509afe709459a and later · before 01678c53a7717a748aee388b6839e7b9761d641caffected · git
- b61ec31c85756bbc898fb892555509afe709459a and later · before 3b4c70c40f2e135a50cd38fc61c7d23a296a9981affected · git
- b61ec31c85756bbc898fb892555509afe709459a and later · before 059a70e1d12d6d99310e0599d37b0323557569a8affected · git
- b61ec31c85756bbc898fb892555509afe709459a and later · before 48067b2ae4504500a7093d9e1e16b42e70330480affected · git
- before 5.1not 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 6.1.180-1 | 6.1.180-1 |
| Debian:13 | linux | before 6.12.100-1 | 6.12.100-1 |
| Debian:14 | linux | before 7.1.5-1 | 7.1.5-1 |
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 | 01678c53a7717a748aee388b6839e7b9761d641c | Vendor (CNA) |
| Linux Linux | 059a70e1d12d6d99310e0599d37b0323557569a8 | Vendor (CNA) |
| Linux Linux | 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146 | Vendor (CNA) |
| Linux Linux | 3b4c70c40f2e135a50cd38fc61c7d23a296a9981 | Vendor (CNA) |
| Linux Linux | 48067b2ae4504500a7093d9e1e16b42e70330480 | Vendor (CNA) |
| Linux Linux | 86aa79b43e5b561fd3648891165bd7313b541315 | Vendor (CNA) |
| Linux Linux | a82fc217cb7a447313c76ebf9f09b100771b0ddf | Vendor (CNA) |
| Linux Linux | d755cd001fa2c248e186c1fc3df3d11d97dc843c | Vendor (CNA) |
| debian:linux | 6.1.180-1 · 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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-0945 · Aug 31, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
Attack conditions
- Anyone who can reach it over the internet 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
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641c
- git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8
- git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146
- git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981
- git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480
- git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315
- git.kernel.org/stable/c/a82fc217cb7a447313c76ebf9f09b100771b0ddf
- git.kernel.org/stable/c/d755cd001fa2c248e186c1fc3df3d11d97dc843c
Vendor advisories and official records. Exploit/PoC links are deliberately left out.