net: mctp: unshare packets when reassembling
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.160, 6.12.20, 6.13.8
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 4a992bbd365094730a31bae1e12a6ca695336d57 · fixed in 3d0281d0713952e8dd14d6d47e3a9c345c28a3b7; From 4a992bbd365094730a31bae1e12a6ca695336d57 · fixed in 5c47d5bfa7b096cf8890afac32141c578583f8e0; From 4a992bbd365094730a31bae1e12a6ca695336d57 · fixed in f44fff3d3c6cd67b6f348b821d73c4d6888c7a6e; From 4a992bbd365094730a31bae1e12a6ca695336d57 · fixed in f5d83cf0eeb90fade4d5c4d17d24b8bee9ceeecc
- Linux Linux
5.15
- KernelLinux
From 5.15.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.20; From 6.13.0 · fixed in 6.13.8