CVE-2026-64537
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)
bridge: cfm: reject invalid CCM interval at configuration time
In the Linux kernel, the following vulnerability has been resolved: bridge: cfm: reject invalid CCM interval at configuration time ccm_tx_work_expired() re-arms itself via queue_delayed_work() using the configured exp_interval converted by interval_to_us(). When exp_interval is BR_CFM_CCM_INTERVAL_NONE or out of range, interval_to_us() returns 0, causing the worker to fire immediately in a tight loop that allocates skbs until OOM. Fix this by validating exp_interval at configuration time: - Constrain IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL to the valid range [BR_CFM_CCM_INTERVAL_3_3_MS, BR_CFM_CCM_INTERVAL_10_MIN] in the netlink policy so userspace cannot set an invalid value. - Reject starting CCM TX in br_cfm_cc_ccm_tx() when exp_interval has not yet been configured (defaults to 0 from kzalloc).
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) |
|---|---|---|---|---|---|
| 2be665c3940d367e0a2a8128eb4985ce323f99a3 | affected | git | 2870056a78961e0fecd652362ee9d3fcfd24a8a6 | Unavailable | None listed |
| 2be665c3940d367e0a2a8128eb4985ce323f99a3 | affected | git | f0f5eb59a97ece0d85de8cfa95dc18c609302a8b | Unavailable | None listed |
| 2be665c3940d367e0a2a8128eb4985ce323f99a3 | affected | git | 53788b134519e995699ea3721969c96a08d64575 | Unavailable | None listed |
| 2be665c3940d367e0a2a8128eb4985ce323f99a3 | affected | git | b42aeb58317f12024734759ff745856b53948873 | Unavailable | None listed |
| 2be665c3940d367e0a2a8128eb4985ce323f99a3 | affected | git | a090880c1f544589427e5b7050c40fb211ccecb4 | Unavailable | None listed |
| 2be665c3940d367e0a2a8128eb4985ce323f99a3 | affected | git | 865643640b5b5c4579b32d7a55ac9ad648362eaa | Unavailable | None listed |
| 2be665c3940d367e0a2a8128eb4985ce323f99a3 | affected | git | f3e02edd8322b31b8e6517faa6ba053bf29d1e26 | 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) |
|---|---|---|---|---|---|
| 5.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.11 | Unavailable | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |