netfilter: complete validation of user input
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 5.10.216, 5.15.156, 6.1.87, 6.6.28, 6.8.7
- 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
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: complete validation of user input In my recent commit, I missed that do_replace() handlers use copy_from_sockptr() (which I fixed), followed by unsafe copy_from_sockptr_offset() calls. In all functions, we can perform the @optlen validation before even calling xt_alloc_table_info() with the following check: if ((u64)optlen < (u64)tmp.size + sizeof(tmp)) return -EINVAL;
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 0f038242b77ddfc505bf4163d4904c1abd2e74d6 · fixed in cf4bc359b76144a3dd55d7c09464ef4c5f2b2b05; From 440e948cf0eff32cfe322dcbca3f2525354b159b · fixed in 97dab36e57c64106e1c8ebd66cbf0d2d1e52d6b7; From 18aae2cb87e5faa9c5bd865260ceadac60d5a6c5 · fixed in c760089aa98289b4b88a7ff5a62dd92845adf223; From 81d51b9b7c95e791ba3c1a2dd77920a9d3b3f525 · fixed in 89242d9584c342cb83311b598d9e6b82572eadf8; From 58f2bfb789e6bd3bc24a2c9c1580f3c67aec3018 · fixed in 562b7245131f6e9f1d280c8b5a8750f03edfc05c; From 0c83842df40f86e529db6842231154772c20edcc · fixed in 65acf6e0501ac8880a4f73980d01b5d27648b956
- Linux Linux
From 5.10.215 · fixed in 5.10.216; From 5.15.154 · fixed in 5.15.156; From 6.1.85 · fixed in 6.1.87; From 6.6.26 · fixed in 6.6.28; From 6.8.5 · fixed in 6.8.7
- KernelLinux
From 5.10.215 · fixed in 5.10.216; From 5.15.154 · fixed in 5.15.156; From 6.1.85 · fixed in 6.1.87; From 6.6.26 · fixed in 6.6.28; From 6.8.5 · fixed in 6.8.7