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CVE-2026-80600batman-adv: dat: acquire ARP hw source only after skb realloc
- 9.8CriticalCVSS base score
- 0.73%Exploitation in 30 daysEPSS · top 45% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 2 days later
· 2 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.73% · top 45% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected b61ec31c85756bbc898fb892555509afe709459a – < a82fc217cb7a447313c76ebf9f09b100771b0ddf
- affected b61ec31c85756bbc898fb892555509afe709459a – < 86aa79b43e5b561fd3648891165bd7313b541315
- affected b61ec31c85756bbc898fb892555509afe709459a – < d755cd001fa2c248e186c1fc3df3d11d97dc843c
- affected b61ec31c85756bbc898fb892555509afe709459a – < 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146
- affected b61ec31c85756bbc898fb892555509afe709459a – < 01678c53a7717a748aee388b6839e7b9761d641c
- affected b61ec31c85756bbc898fb892555509afe709459a – < 3b4c70c40f2e135a50cd38fc61c7d23a296a9981
- affected b61ec31c85756bbc898fb892555509afe709459a – < 059a70e1d12d6d99310e0599d37b0323557569a8
- affected b61ec31c85756bbc898fb892555509afe709459a – < 48067b2ae4504500a7093d9e1e16b42e70330480
- affected 5.1
- unaffected < 5.1
- unaffected 5.10.261 – ≤ 5.10.*
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/a82fc217cb7a447313c76ebf9f09b100771b0ddf (opens in a new tab)
- https://git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315 (opens in a new tab)
- https://git.kernel.org/stable/c/d755cd001fa2c248e186c1fc3df3d11d97dc843c (opens in a new tab)
- https://git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146 (opens in a new tab)
- https://git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641c (opens in a new tab)
- https://git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981 (opens in a new tab)
- https://git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8 (opens in a new tab)
- https://git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-67476 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-80600)Record last updated .