{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89717",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.752Z",
        "datePublished": "2026-09-11T19:46:30.698Z",
        "dateUpdated": "2026-10-21T12:48:28.119Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:48:28.119Z"
            },
            "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()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/block/zram/zram_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "6e20720b12299595154857fa98222729f0d5823c",
                            "lessThan": "a5fda7def04d98ab7c5cbb2394714fb1f8c56cb5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "486fd58af7ac1098b68370b1d4d9f94a2a1c7124",
                            "lessThan": "4bf3328eeec9afc2a55632ff47fc18101ea62d73",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "486fd58af7ac1098b68370b1d4d9f94a2a1c7124",
                            "lessThan": "5cec3e60e9f2d1324179df3aa91656f90095cf8f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "486fd58af7ac1098b68370b1d4d9f94a2a1c7124",
                            "lessThan": "dea8f13c3dfad8b990f8ea96c997aabeebbc1d22",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "486fd58af7ac1098b68370b1d4d9f94a2a1c7124",
                            "lessThan": "dde75313eed0b014c437f48dd75c0308b592cbf9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c4e5683c3031a33dc46954e99d37cbd2f706cdb6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.6.57",
                            "lessThan": "6.6.160",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11.4",
                            "lessThan": "6.12",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/block/zram/zram_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "6.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.57",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionStartIncluding": "6.11.4"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a5fda7def04d98ab7c5cbb2394714fb1f8c56cb5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4bf3328eeec9afc2a55632ff47fc18101ea62d73"
                },
                {
                    "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()",
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}