CVE-2026-52993
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)
tipc: fix double-free in tipc_buf_append()
In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipc_buf_append() tipc_msg_validate() can potentially reallocate the skb it is validating, freeing the old one. In tipc_buf_append(), it was being called with a pointer to a local variable which was a copy of the caller's skb pointer. If the skb was reallocated and validation subsequently failed, the error handling path would free the original skb pointer, which had already been freed, leading to double-free. Fix this by checking if head now points to a newly allocated reassembled skb. If it does, reassign *headbuf for later freeing operations.
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) |
|---|---|---|---|---|---|
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | a438975a6dcdbd70865978c021650d1485586f0b | Unavailable | None listed |
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | 4ee4deadaae7cb2e3d53af0fc889cf92a73413c0 | Unavailable | None listed |
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | d3556656c6daebf8def751c7e71d11dd0a180d24 | Unavailable | None listed |
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | 0274f24485fc38032d4093e463dc3ff5c7a667c9 | Unavailable | None listed |
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | 4d104882bc815d4ec666ace9155f5f52715879a6 | Unavailable | None listed |
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | 1d5e589055880fae229e229e1929e087dbe08cf3 | Unavailable | None listed |
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | 29940fff14110ca48c5ccc168d121665b51bb778 | Unavailable | None listed |
| d618d09a68e4eed7a435beb2e355250f6f40664a | affected | git | d293ca716e7d5dffdaecaf6b9b2f857a33dc3d3a | 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) |
|---|---|---|---|---|---|
| 4.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.15 | 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 |
| 6.6.141 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.91 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.33 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.10 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |