CVE-2025-21972
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net: mctp: unshare packets when reassembling
In the Linux kernel, the following vulnerability has been resolved: net: mctp: unshare packets when reassembling Ensure that the frag_list used for reassembly isn't shared with other packets. This avoids incorrect reassembly when packets are cloned, and prevents a memory leak due to circular references between fragments and their skb_shared_info. The upcoming MCTP-over-USB driver uses skb_clone which can trigger the problem - other MCTP drivers don't share SKBs. A kunit test is added to reproduce the issue.
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) |
|---|---|---|---|---|---|
| 4a992bbd365094730a31bae1e12a6ca695336d57 | affected | git | 3d0281d0713952e8dd14d6d47e3a9c345c28a3b7 | Unavailable | None listed |
| 4a992bbd365094730a31bae1e12a6ca695336d57 | affected | git | 5c47d5bfa7b096cf8890afac32141c578583f8e0 | Unavailable | None listed |
| 4a992bbd365094730a31bae1e12a6ca695336d57 | affected | git | f44fff3d3c6cd67b6f348b821d73c4d6888c7a6e | Unavailable | None listed |
| 4a992bbd365094730a31bae1e12a6ca695336d57 | affected | git | f5d83cf0eeb90fade4d5c4d17d24b8bee9ceeecc | 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) |
|---|---|---|---|---|---|
| 5.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.15 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.20 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.13.8 | unaffected | semver | Unavailable | 6.13.* | None listed |
| 6.14 | unaffected | original_commit_for_fix | Unavailable | * | None listed |