- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 88% 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: bla: fix freeing of claims on meshif deletion When the mesh interface is getting deleted, then batadv_bla_del_backbone_claims() (via batadv_bla_purge_backbone_gw()) could make sure that all claims gets removed. But this function is only executed when bat_priv->bla.claim_hash is not NULL. And since batadv_bla_free() is always setting it to NULL before it is (indirectly) called, it was never actually executed. But the batadv_bla_purge_claims() -> batadv_handle_unclaim() is at the moment too fragile because the BLA code is not handling the rehashing in batadv_bla_update_orig_address(). The stored backbone address doesn't have to be the one actually used for the hash bucket selection during the initial adding of the backbone. The batadv_handle_unclaim() can therefore fail to find the respective backbone for the unclaim and then stop the deletion. But the actual backbone_gw object is not needed for the unclaim because all relevant information is always provided by the caller. And the check for the existence of the backbone_gw doesn't provide any additional security check for the deletion of a claim.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.22% · top 88% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < 844a95a734f178d56c7acce14c5cce2cecff7e1a
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < baeb1a28fd8e2f68193650d3664a8cd1adfd85c6
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < aacffa780a37e06cd5a13d33740a6e96c3a67e6c
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < 76aedcde5a2489cc971d4d1e396e784a49565e96
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < f50edb69082a8ba990cc23d642089829f99afe6a
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < 871acdf97f64cee8398f72b88b89e8b4f4816dbe
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < 9a0c47023d3254048a1588534755d4476bcc3abc
- affected 23721387c409087fd3b97e274f34d3ddc0970b74 – < 8d128c932bced74e3b1625ba3d7c78ef122a88a7
- affected 3.5
- unaffected < 3.5
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/844a95a734f178d56c7acce14c5cce2cecff7e1a (opens in a new tab)
- https://git.kernel.org/stable/c/baeb1a28fd8e2f68193650d3664a8cd1adfd85c6 (opens in a new tab)
- https://git.kernel.org/stable/c/aacffa780a37e06cd5a13d33740a6e96c3a67e6c (opens in a new tab)
- https://git.kernel.org/stable/c/76aedcde5a2489cc971d4d1e396e784a49565e96 (opens in a new tab)
- https://git.kernel.org/stable/c/f50edb69082a8ba990cc23d642089829f99afe6a (opens in a new tab)
- https://git.kernel.org/stable/c/871acdf97f64cee8398f72b88b89e8b4f4816dbe (opens in a new tab)
- https://git.kernel.org/stable/c/9a0c47023d3254048a1588534755d4476bcc3abc (opens in a new tab)
- https://git.kernel.org/stable/c/8d128c932bced74e3b1625ba3d7c78ef122a88a7 (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-2026-80548 (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-2026-89948)Record last updated .