batman-adv: v: prevent OGM aggregation on disabled hardif
Summary
| CVE | CVE-2026-63835 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-19 12:16:56 UTC |
| Updated | 2026-07-19 12:16:56 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: batman-adv: v: prevent OGM aggregation on disabled hardif When an interface gets disabled, the worker is correctly disabled by batadv_hardif_disable_interface() -> ... -> batadv_v_ogm_iface_disable(). In this process, the skb aggr_list is also freed. But batadv_v_ogm_send_meshif() can still queue new skbs (via batadv_v_ogm_queue_on_if()) to the aggr_list. This will only stop after all cores can no longer find the RCU protected list of hard interfaces. These queued skbs will never be freed or consumed by batadv_v_ogm_aggr_work. The batadv_v_ogm_iface_disable() function must block batadv_v_ogm_queue_on_if() to avoid leak of skbs. |
Risk And Classification
EPSS: 0.001650000 probability, percentile 0.060810000 (date 2026-07-20)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a d462ced79dd430200cf888984e8005da77fc810b git | Not specified |
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a f79deaaf822ab0ee2424cf28781f9ab91576bea3 git | Not specified |
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a d3569327fc7395b2b0461a0a0cb77a0bb74786c0 git | Not specified |
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a 97644fdaaf6446ffbe182c5eb804fceb5b1a51b7 git | Not specified |
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a f04dde74399431fb07abbdd9cd5d0ed624771d04 git | Not specified |
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a 3d4548c96d6f21ac1a9b06c5f82f3ef439c87023 git | Not specified |
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a 86ab6b6fb5b82163bf6c45780bb72150021d7349 git | Not specified |
| CNA | Linux | Linux | affected f89255a02f1d75d8e1b9d1c31435fcb64840cb2a d11c00b95b2a3b3934007fc003dccc6fdcc061ad git | Not specified |
| CNA | Linux | Linux | affected 5.4 | Not specified |
| CNA | Linux | Linux | unaffected 5.4 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.260 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.211 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.177 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.144 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.95 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.38 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.3 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/86ab6b6fb5b82163bf6c45780bb72150021d7349 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/97644fdaaf6446ffbe182c5eb804fceb5b1a51b7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d11c00b95b2a3b3934007fc003dccc6fdcc061ad | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d462ced79dd430200cf888984e8005da77fc810b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f04dde74399431fb07abbdd9cd5d0ed624771d04 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3d4548c96d6f21ac1a9b06c5f82f3ef439c87023 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f79deaaf822ab0ee2424cf28781f9ab91576bea3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d3569327fc7395b2b0461a0a0cb77a0bb74786c0 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.