Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4a992bbd365094730a31bae1e12a6ca695336d57 before 3d0281d0713952e8dd14d6d47e3a9c345c28a3b7; affected 4a992bbd365094730a31bae1e12a6ca695336d57 before 5c47d5bfa7b096cf8890afac32141c578583f8e0; affected 4a992bbd365094730a31bae1e12a6ca695336d57 before f44fff3d3c6cd67b6f348b821d73c4d6888c7a6e; affected 4a992bbd365094730a31bae1e12a6ca695336d57 before f5d83cf0eeb90fade4d5c4d17d24b8bee9ceeecc |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 6.6.160 through 6.6.*; unaffected 6.12.20 through 6.12.*; unaffected 6.13.8 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.