scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.1.16, 6.2.3
- 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: scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization Commit c1af985d27da ("scsi: mpi3mr: Add Event acknowledgment logic") introduced an array mrioc->evtack_cmds but initialization of the array elements was missed. They are just zero cleared. The function mpi3mr_complete_evt_ack() refers host_tag field of the elements. Due to the zero value of the host_tag field, the function calls clear_bit() for mrico->evtack_cmds_bitmap with wrong bit index. This results in memory access to invalid address and "BUG: KASAN: use-after-free". This BUG was observed at eHBA-9600 firmware update to version 8.3.1.0. To fix it, add the missing initialization of mrioc->evtack_cmds.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From c1af985d27da2d530c22604644e9025810f57d7c · fixed in 4e0dfdb48a824deac3dfbc67fb856ef2aee13529; From c1af985d27da2d530c22604644e9025810f57d7c · fixed in 67989091e11a974003ddf2ec39bc613df8eadd83; From c1af985d27da2d530c22604644e9025810f57d7c · fixed in e39ea831ebad4ab15c4748cb62a397a8abcca36e
- Linux Linux
5.17
- KernelLinux
From 5.17.0 · fixed in 6.1.16; From 6.2.0 · fixed in 6.2.3