CVE-2023-53292
blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.1.175, 6.4.7
- 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
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none After grabbing q->sysfs_lock, q->elevator may become NULL because of elevator switch. Fix the NULL dereference on q->elevator by checking it with lock.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 5fd7a84a09e640016fe106dd3e992f5210e23dc7 · fixed in 988ddb77218d3975dd13dee7bb0e1fae098a9fdb; From 5fd7a84a09e640016fe106dd3e992f5210e23dc7 · fixed in 3e977386521b71471e66ec2ba82efdfcc456adf2; From 5fd7a84a09e640016fe106dd3e992f5210e23dc7 · fixed in 245165658e1c9f95c0fecfe02b9b1ebd30a1198a
- Linux Linux
5.19
- KernelLinux
From 5.19.0 · fixed in 6.1.175; From 6.2.0 · fixed in 6.4.7