CVE-2026-89717

Not enough EPSS history yet.

In the Linux kernel, the following vulnerability has been resolved: zram: set default primary compressor in zram_destroy_comps() Patch series "zram: fix zram issues reported by sashiko". Sashiko drove by and reported [1] a couple of zram issues: a possible BUG_ON() in zlib code due to missing winbits range validation and one possible NULL-ptr dereference in zcomp. Both are low risk yet still worth fixing. This patch (of 2): zram_destroy_comps() resets all compressors and leaves them set to NULL, including the primary one, which is invalid device state, as now comp_algorithm_show()->strcmp() can be called on a NULL compressor. Set default primary compressor in zram_destroy_comps().

• git.kernel.orghttps://git.kernel.org/stable/c/5cec3e60e9f2d1324179df3aa91656f90095cf8f
• git.kernel.orghttps://git.kernel.org/stable/c/dde75313eed0b014c437f48dd75c0308b592cbf9
• git.kernel.orghttps://git.kernel.org/stable/c/dea8f13c3dfad8b990f8ea96c997aabeebbc1d22

No related CVEs by CWE or product.