CVE-2026-64218
CVE CVE-2026-64218EUVD EUVD-2026-48626Published 2026-07-24T15:23:05.000ZLast changed 2026-08-05T12:40:06.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: fix report_work leak on backbone_gw purge batadv_bla_purge_backbone_gw() removes stale backbone gateway entries, but fails to properly handle their associated report_work: - If report_work is running, the purge must wait for it to finish before freeing the backbone_gw, otherwise the worker may access freed memory (e.g. bat_priv). - If report_work is pending, the purge must cancel it and release the reference held for that pending work item. The previous implementation called hlist_for_each_entry_safe() inside a spin_lock_bh() section, but cancel_work_sync() may sleep and therefore cannot be called from within a spinlock-protected region. Restructure the loop to handle one entry per spinlock critical section: acquire the lock, find the next entry to purge, remove it from the hash list, then release the lock before calling cancel_work_sync() and dropping the hash_entry reference. Repeat until no more entries require purging.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 23721387c409087fd3b97e274f34d3ddc0970b74 <48663158222b3b7f6ee6791a67d512ede7fc94bb; 3.5; 23721387c409087fd3b97e274f34d3ddc0970b74 <0459430add32ea41f3e2ef9351610e6d33627a6b; patch: 0; 23721387c409087fd3b97e274f34d3ddc0970b74 <eeddd7bab3d59c1e98642a204141f8c5d6194707; patch: 6.1.175; patch: 7.0.11; patch: 5.10.258; patch: 6.12.92; patch: 6.18.34; patch: 7.1; 23721387c409087fd3b97e274f34d3ddc0970b74 <c6de1a5a9c406e30b91f1515a6ce05cc84023baa; patch: 5.15.209; 23721387c409087fd3b97e274f34d3ddc0970b74 <95a7034661274cf5985708bd2f6d86ee46f88fa9; patch: 6.6.142; 23721387c409087fd3b97e274f34d3ddc0970b74 <ce2c0ee4d76d5ee4b391fe0e31334361e25030ec; 23721387c409087fd3b97e274f34d3ddc0970b74 <3423a45e5c3d3c5129f88143a9a969787d7d5a0a; 23721387c409087fd3b97e274f34d3ddc0970b74 <f1303adb1e59582f76c22798a2e2e150e054a9e7
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
Does this concern one of your customers?
This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.
Try it for 28 daysPatchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.