CVE-2026-89852 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20506629
- published5 Oct 2026
- disclosed16 Sept 2026
Introduced: 16 Sep 2026
NewCVE-2026-89852 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()
The mbx_cmd_t is allocated on the stack but left uninitialized. qla2x00_mailbox_command() has several early-return paths (PCI permanent failure, device failed, EEH busy, ISP abort pending, mailbox access timeout, purge mbox) that return without writing the input mailbox registers back into mcp->mb[]. qla2x00_get_firmware_state() then unconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's states[] array regardless of the return value.
On such a failure the copied values are uninitialized kernel stack memory, which is then exposed to userspace via the fw_state and mpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query yields deterministic zeroed state instead of leaking stack contents.
References
- https://security-tracker.debian.org/tracker/CVE-2026-89852
- https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97
- https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79
- https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb
- https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f
- https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083
- https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05
- https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a
- https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb