block: don't revert iter for -EIOCBQUEUED
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.1.129, 6.6.78, 6.12.14, 6.13.3
- 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: total
Summary
In the Linux kernel, the following vulnerability has been resolved: block: don't revert iter for -EIOCBQUEUED blkdev_read_iter() has a few odd checks, like gating the position and count adjustment on whether or not the result is bigger-than-or-equal to zero (where bigger than makes more sense), and not checking the return value of blkdev_direct_IO() before doing an iov_iter_revert(). The latter can lead to attempting to revert with a negative value, which when passed to iov_iter_revert() as an unsigned value will lead to throwing a WARN_ON() because unroll is bigger than MAX_RW_COUNT. Be sane and don't revert for -EIOCBQUEUED, like what is done in other spots.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 3e1f941dd9f33776b3df4e30f741fe445ff773f3 · fixed in 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb; From 3e1f941dd9f33776b3df4e30f741fe445ff773f3 · fixed in 84671b0630ccb46ae9f1f99a45c7d63ffcd6a474; From 3e1f941dd9f33776b3df4e30f741fe445ff773f3 · fixed in 68f16d3034a06661245ecd22f0d586a8b4e7c473; From 3e1f941dd9f33776b3df4e30f741fe445ff773f3 · fixed in a58f136bad29f9ae721a29d98c042fddbee22f77; From 3e1f941dd9f33776b3df4e30f741fe445ff773f3 · fixed in b13ee668e8280ca5b07f8ce2846b9957a8a10853
- Linux Linux
5.17
- KernelLinux
From 5.17.0 · fixed in 6.1.129; From 6.2.0 · fixed in 6.6.78; From 6.7.0 · fixed in 6.12.14; From 6.13.0 · fixed in 6.13.3