CVE-2026-74688
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)
sctp: clear control chunk transport if it is being removed
In the Linux kernel, the following vulnerability has been resolved: sctp: clear control chunk transport if it is being removed sctp_make_heartbeat_ack() caches the destination transport in chunk->transport without taking a reference. When src_out_of_asoc_ok is enabled, the HEARTBEAT ACK may remain queued on control_chunk_list instead of being transmitted immediately. If the peer transport is removed while the chunk is still queued, sctp_assoc_rm_peer() drops the transport and schedules it for RCU freeing, but only clears cached transport pointers in out_chunk_list. The queued control chunk therefore retains a dangling transport pointer. Once an ASCONF_ACK clears the suppression and the queued control chunk is transmitted, SCTP dereferences the stale transport pointer, leading to a use-after-free. Fix this by also clearing chunk->transport for queued control chunks in control_chunk_list when removing the transport.
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) |
|---|---|---|---|---|---|
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | dbb3f418a8665ffb0514e1a9520ab6a1c5d4d886 | Unavailable | None listed |
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | fad4766a74220fe579c6fcaa10ba01c23529814f | Unavailable | None listed |
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | 936658ec41c28c397ef390140e02d4c91ade92f0 | Unavailable | None listed |
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | 8de65194a04d2552cd39b6c67d942d490f22d174 | Unavailable | None listed |
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | 6160e756db81d6cb63e3e2952efcf6c5134be385 | Unavailable | None listed |
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | 18d704bdd809377dfd81a3c2f42426763b5da227 | Unavailable | None listed |
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | 4d6b9cac6df5e0cfef1a66b3edd7aebdb9e4b7e7 | Unavailable | None listed |
| 8a07eb0a50aebc8c95478d49c28c7f8419a26cef | affected | git | c9158ceaf27780ef64534ad72f44ffde3f8ccc49 | 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) |
|---|---|---|---|---|---|
| 3.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.1 | Unavailable | None listed |
| 5.10.265 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.216 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.183 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.152 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.104 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.45 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.9 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |