CVE-2026-97605 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-LINUX612-20506928
- published5 Oct 2026
- disclosed25 Sept 2026
Introduced: 25 Sep 2026
NewCVE-2026-97605 (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:
erofs: preserve LZMA decoders on resize failure
The pool-resize path frees each stream's old decoder before allocating its replacement. If an allocation fails after some streams have already been replaced, the failed stream is put back on the list with state == NULL. z_erofs_lzma_max_dictsize is still advanced as if the whole pool had been resized.
An existing LZMA mount can select the broken stream and pass NULL to xz_dec_microlzma_reset(). A retry at the same size also skip another resize attempt. Since the global maximum was advanced, thus, the invalid state is left unrepaired.
Allocate each replacement before freeing the old decoder, temporarily retaining one old decoder during allocation. Stop at the first failure and advance z_erofs_lzma_max_dictsize only after all streams satisfy the request.
Record each stream's dictionary capacity so retries can skip streams already enlarged before a partial failure.
References
- https://security-tracker.debian.org/tracker/CVE-2026-97605
- https://git.kernel.org/stable/c/0b3c8c39e50249470f00a5f73c288b95a55ab576
- https://git.kernel.org/stable/c/38e9e07ac02a9453a117410776f1502a9980997e
- https://git.kernel.org/stable/c/604ce546e1b9f35b1f45588004f53fac6b2869c1
- https://git.kernel.org/stable/c/617d0d8d199ba1790c94310fd75a22d01c97a8d6