CVSS 7.8 · High EPSS 0,18%
Kerentanan pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut CNA.
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 3.5 hingga sebelum 5.10.258 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.209 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.175 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.142 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.92 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.18.34 |
| linux | linux kernel | Versi 6.19 hingga sebelum 7.0.11 |
| linux | linux kernel | Versi 7.1 rc1 |
| linux | linux kernel | Versi 7.1 rc2 |
| linux | linux kernel | Versi 7.1 rc3 |
| linux | linux kernel | Versi 7.1 rc4 |