scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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, 6.12.112, 6.18.53, 7.2.7
- 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
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[] The FC BSG transport allocates job->request via memdup_user() using the exact user-supplied request_len. For FC_BSG_HST_VENDOR, fc_bsg_host_dispatch() only guarantees request_len covers msgcode and vendor_id; it does not account for the vendor_cmd[] flexible array. qla2xxx then reads the command selector vendor_cmd[0] and, in several sub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor command area without verifying request_len. A caller holding CAP_SYS_RAWIO can submit a short request whose vendor_id matches the host, triggering out-of-bounds heap reads (KASAN-detectable, and able to mis-select a command or panic). Add a central guard in qla2x00_process_vendor_specific() so the selector is always in bounds, restrict the early vendor_cmd[0] read in qla24xx_bsg_request() to sufficiently long vendor messages, and add request_len checks to the sub-handlers that read further: qla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(), qla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(), qla2x00_update_optrom(), qlafx00_mgmt_cmd() and qla28xx_validate_flash_image().
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 · fixed in 5f33efe04658968b6b3f432f904d5f1f74c12286; From 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 · fixed in ef63922d8bdea03de1804af39a6b12212acb1be2; From 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 · fixed in 740f3458a4798af54aaf8cf63e797d407e8b6d3b; From 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 · fixed in f75bff451a2fac5aed82f9641df1e9a42c5a899d; From 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 · fixed in 4cf38dd9465736141263ebb63375868311a0ec81
- Linux Linux
4.10
- KernelLinux
From 4.10.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7