CVE-2026-52919
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
batman-adv: fix tp_meter counter underflow during shutdown
In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tp_meter counter underflow during shutdown batadv_tp_sender_shutdown() unconditionally decrements the "sending" atomic counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the counter can underflow to -1. Since the sender logic treats any non-zero value as "still sending", a negative value causes the sender kthread to loop indefinitely. This leads to a use-after-free when the interface is removed while the zombie thread is still active. Fix this by using atomic_xchg() to ensure the counter only transitions from 1 to 0 once. [sven: added missing change in batadv_tp_send]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | e75e2ab463b5b34df6b98f94d740aff327ce9f6b | Unavailable | None listed |
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | abae88fa254f2981d39ac003a7b302528a22af64 | Unavailable | None listed |
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | c66d20a3ff095e3f000551d208ec2606616db15c | Unavailable | None listed |
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | c1bac194733aabd731aafa6a01350c229e187dba | Unavailable | None listed |
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | 01cefc5923889e29dbb5f281c3d457714ceb9c00 | Unavailable | None listed |
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | 90ae3eae06b7b8ab9f6250b9497c860915b4c17b | Unavailable | None listed |
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | aeae11c5dad9cd0d50723890bdd866f8e6db2e7d | Unavailable | None listed |
| 33a3bb4a3345bb511f9c69c913da95d4693e2a4e | affected | git | 94f3b133168d1c49895e7cc6afbcf1cc0b354602 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.8 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.142 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.92 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.34 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.11 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |