CVE-2026-31657
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: hold claim backbone gateways by reference
In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by reference batadv_bla_add_claim() can replace claim->backbone_gw and drop the old gateway's last reference while readers still follow the pointer. The netlink claim dump path dereferences claim->backbone_gw->orig and takes claim->backbone_gw->crc_lock without pinning the underlying backbone gateway. batadv_bla_check_claim() still has the same naked pointer access pattern. Reuse batadv_bla_claim_get_backbone_gw() in both readers so they operate on a stable gateway reference until the read-side work is complete. This keeps the dump and claim-check paths aligned with the lifetime rules introduced for the other BLA claim readers.
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) |
|---|---|---|---|---|---|
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | 5202f071b367ffbc8e279fc7a00db14f5e587f52 | Unavailable | None listed |
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | 69d1ce9c72eca91203ffdb8d08bacd511100aec6 | Unavailable | None listed |
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | f4858832ddef2f39f21e30b7226bbcd3c4b2bc96 | Unavailable | None listed |
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | 2f55b58b5a0bbed192d60c444a45a49cdf1b545f | Unavailable | None listed |
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | 7962b522222628596ca9ecc8722efc95367aadbd | Unavailable | None listed |
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | 4dee4c0688443aaf5bbec74aa203c851d1d53c35 | Unavailable | None listed |
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | 1f2dc36c297d27733f1b380ea644cf15a361bd7b | Unavailable | None listed |
| 23721387c409087fd3b97e274f34d3ddc0970b74 | affected | git | 82d8701b2c930d0e96b0dbc9115a218d791cb0d2 | 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) |
|---|---|---|---|---|---|
| 3.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.5 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.169 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.135 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.82 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.23 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.13 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |