{"id":"CVE-2026-89717","revision":"008ec55f1ee749a8a52f9ae68778ce0d","records":[{"revision":"008ec55f1ee749a8a52f9ae68778ce0d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89717","aliases":[],"title":"zram: set default primary compressor in zram_destroy_comps()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nzram: set default primary compressor in zram_destroy_comps()\n\nPatch series \"zram: fix zram issues reported by sashiko\".\n\nSashiko drove by and reported [1] a couple of zram issues:\na possible BUG_ON() in zlib code due to missing winbits range\nvalidation and one possible NULL-ptr dereference in zcomp.\nBoth are low risk yet still worth fixing.\n\n\nThis patch (of 2):\n\nzram_destroy_comps() resets all compressors and leaves them set to NULL,\nincluding the primary one, which is invalid device state, as now\ncomp_algorithm_show()->strcmp() can be called on a NULL compressor.  Set\ndefault primary compressor in zram_destroy_comps().","state":0,"publishedAt":"2026-09-11T19:46:30.698+00:00","modifiedAt":"2026-10-21T12:48:28.119+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/block/zram/zram_drv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6e20720b12299595154857fa98222729f0d5823c\",\n                            \"lessThan\": \"a5fda7def04d98ab7c5cbb2394714fb1f8c56cb5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"486fd58af7ac1098b68370b1d4d9f94a2a1c7124\",\n                            \"lessThan\": \"4bf3328eeec9afc2a55632ff47fc18101ea62d73\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"486fd58af7ac1098b68370b1d4d9f94a2a1c7124\",\n                            \"lessThan\": \"5cec3e60e9f2d1324179df3aa91656f90095cf8f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"486fd58af7ac1098b68370b1d4d9f94a2a1c7124\",\n                            \"lessThan\": \"dea8f13c3dfad8b990f8ea96c997aabeebbc1d22\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"486fd58af7ac1098b68370b1d4d9f94a2a1c7124\",\n                            \"lessThan\": \"dde75313eed0b014c437f48dd75c0308b592cbf9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c4e5683c3031a33dc46954e99d37cbd2f706cdb6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.6.57\",\n                            \"lessThan\": \"6.6.160\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11.4\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/block/zram/zram_drv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89717","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89717","identifiers":["CVE-2026-89717"]},"retained":false,"historicalAffected":[]}],"coverage":[]}