zram: set default primary compressor in zram_destroy_comps() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
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().
References
- https://git.kernel.org/stable/c/a5fda7def04d98ab7c5cbb2394714fb1f8c56cb5
- https://git.kernel.org/stable/c/4bf3328eeec9afc2a55632ff47fc18101ea62d73
- https://git.kernel.org/stable/c/5cec3e60e9f2d1324179df3aa91656f90095cf8f
- https://git.kernel.org/stable/c/dea8f13c3dfad8b990f8ea96c997aabeebbc1d22
- https://git.kernel.org/stable/c/dde75313eed0b014c437f48dd75c0308b592cbf9
European references
- ENISA EUVD · EUVD-2026-76629
- GCVE · GCVE-0-2026-89717
CERT-FR advisories
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 6e20720b12299595154857fa98222729f0d5823c < a5fda7def04d98ab7c5cbb2394714fb1f8c56cb5 ; affected 486fd58af7ac1098b68370b1d4d9f94a2a1c7124 < 4bf3328eeec9afc2a55632ff47fc18101ea62d73 ; affected 486fd58af7ac1098b68370b1d4d9f94a2a1c7124 < 5cec3e60e9f2d1324179df3aa91656f90095cf8f ; affected 486fd58af7ac1098b68370b1d4d9f94a2a1c7124 < dea8f13c3dfad8b990f8ea96c997aabeebbc1d22 ; affected 486fd58af7ac1098b68370b1d4d9f94a2a1c7124 < dde75313eed0b014c437f48dd75c0308b592cbf9 ; affected c4e5683c3031a33dc46954e99d37cbd2f706cdb6 |
| Linux · Linux | affected 6.12 ; unaffected 0 < 6.12 ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.111 ≤ 6.12.* ; unaffected 6.18.51 ≤ 6.18.* ; unaffected 7.2.4 ≤ 7.2.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |