CVE-2026-89952 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-LINUX612-20506660
- published5 Oct 2026
- disclosed16 Sept 2026
Introduced: 16 Sep 2026
NewCVE-2026-89952 (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:
mtd: rawnand: validate ONFI extended parameter page sections
nand_flash_detect_ext_param_page() allocates the length declared by the ONFI parameter page, then treats the data as a fixed header followed by variable-length sections. It reads that header and advances over sections without first proving that the fixed page and each current section fit in the allocation.
Reject pages shorter than the fixed header, track the remaining variable area while walking sections, and require the ECC section to contain every field read from struct onfi_ext_ecc_info. Use device-scoped diagnostics that identify the malformed ONFI section.
References
- https://security-tracker.debian.org/tracker/CVE-2026-89952
- https://git.kernel.org/stable/c/12a63a0f0d17b2d26211b2524ded91a67dd5c99c
- https://git.kernel.org/stable/c/1bf148fabe6463422195b7cc43b3412533f1dc21
- https://git.kernel.org/stable/c/23e747fe585830c43095c37c85b2757231c6917f
- https://git.kernel.org/stable/c/86948f81964e40cd6472d76a6371e4f297d84db0
- https://git.kernel.org/stable/c/c7df90bbda71549bfd981bf478ad04ddfccf4e0d
- https://git.kernel.org/stable/c/c8f86e375b39cada09fd8cb33dd3bb3641e84a62
- https://git.kernel.org/stable/c/ddb6ddf5be7429bb98b3368c883be51f00b31678
- https://git.kernel.org/stable/c/e5e415262330bd70f983e091d8919d9dcd99e475