{"api_version":"1","generated_at":"2026-09-11T21:38:12+00:00","cve":"CVE-2026-89717","urls":{"html":"https://cve.report/CVE-2026-89717","api":"https://cve.report/api/cve/CVE-2026-89717.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89717","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89717"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:59","updated_at":"2026-09-11 20:19:59"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/dde75313eed0b014c437f48dd75c0308b592cbf9","name":"https://git.kernel.org/stable/c/dde75313eed0b014c437f48dd75c0308b592cbf9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5cec3e60e9f2d1324179df3aa91656f90095cf8f","name":"https://git.kernel.org/stable/c/5cec3e60e9f2d1324179df3aa91656f90095cf8f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dea8f13c3dfad8b990f8ea96c997aabeebbc1d22","name":"https://git.kernel.org/stable/c/dea8f13c3dfad8b990f8ea96c997aabeebbc1d22","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89717","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89717","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 486fd58af7ac1098b68370b1d4d9f94a2a1c7124 5cec3e60e9f2d1324179df3aa91656f90095cf8f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 486fd58af7ac1098b68370b1d4d9f94a2a1c7124 dea8f13c3dfad8b990f8ea96c997aabeebbc1d22 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 486fd58af7ac1098b68370b1d4d9f94a2a1c7124 dde75313eed0b014c437f48dd75c0308b592cbf9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6e20720b12299595154857fa98222729f0d5823c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c4e5683c3031a33dc46954e99d37cbd2f706cdb6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.57 6.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.11.4 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/block/zram/zram_drv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5cec3e60e9f2d1324179df3aa91656f90095cf8f","status":"affected","version":"486fd58af7ac1098b68370b1d4d9f94a2a1c7124","versionType":"git"},{"lessThan":"dea8f13c3dfad8b990f8ea96c997aabeebbc1d22","status":"affected","version":"486fd58af7ac1098b68370b1d4d9f94a2a1c7124","versionType":"git"},{"lessThan":"dde75313eed0b014c437f48dd75c0308b592cbf9","status":"affected","version":"486fd58af7ac1098b68370b1d4d9f94a2a1c7124","versionType":"git"},{"status":"affected","version":"6e20720b12299595154857fa98222729f0d5823c","versionType":"git"},{"status":"affected","version":"c4e5683c3031a33dc46954e99d37cbd2f706cdb6","versionType":"git"},{"lessThan":"6.7","status":"affected","version":"6.6.57","versionType":"semver"},{"lessThan":"6.12","status":"affected","version":"6.11.4","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/block/zram/zram_drv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.57","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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()."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:30.698Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5cec3e60e9f2d1324179df3aa91656f90095cf8f"},{"url":"https://git.kernel.org/stable/c/dea8f13c3dfad8b990f8ea96c997aabeebbc1d22"},{"url":"https://git.kernel.org/stable/c/dde75313eed0b014c437f48dd75c0308b592cbf9"}],"title":"zram: set default primary compressor in zram_destroy_comps()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89717","datePublished":"2026-09-11T19:46:30.698Z","dateReserved":"2026-09-11T19:38:34.752Z","dateUpdated":"2026-09-11T19:46:30.698Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:59","lastModifiedDate":"2026-09-11 20:19:59","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89717","Ordinal":"1","Title":"zram: set default primary compressor in zram_destroy_comps()","CVE":"CVE-2026-89717","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89717","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"zram: set default primary compressor in zram_destroy_comps()"}]}}}