CVE-2026-89853 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.
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Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20506630
- published5 Oct 2026
- disclosed16 Sept 2026
Introduced: 16 Sep 2026
NewCVE-2026-89853 (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: Fix FCE trace use-after-free during firmware dump
qla2x00_free_fce_trace() freed and cleared ha->fce while holding only fce_mutex. The firmware-dump consumers qla27xx_fwdt_entry_t264() and qla25xx_copy_fce() read ha->fce (NULL check followed by a copy of the buffer) under hardware_lock and never take fce_mutex. A debugfs FCE disable could therefore free the DMA buffer between a dump's NULL check and its copy, resulting in a use-after-free.
Unpublish ha->fce under hardware_lock, then release the lock and free the DMA buffer (dma_free_coherent() may sleep). A concurrent dump either completes its check and copy with the buffer still valid, or observes ha->fce == NULL and skips it.
References
- https://security-tracker.debian.org/tracker/CVE-2026-89853
- https://git.kernel.org/stable/c/41ef7edde27ac87d55ffc703da44e78aa8c2e896
- https://git.kernel.org/stable/c/423487f03e325b8665d20a2a3171fe012b1a4fa9
- https://git.kernel.org/stable/c/53298efcbbb0f0438366d45cb7ed7e6d93dd5531
- https://git.kernel.org/stable/c/6003e79148eca73d7cafb076f5be47e234d543d0
- https://git.kernel.org/stable/c/7bd308cd893e8cce023d03a40a2f0adccaff0175
- https://git.kernel.org/stable/c/8e7a26931b6111583cfeaf49c068f26524dc3af2
- https://git.kernel.org/stable/c/edc464a4fc96e2720d166e7cc7e7a6827b086760
- https://git.kernel.org/stable/c/ef9b89f6c92274c3670403fd06130ca25f685050