{"id":"CVE-2026-80679","state":"PUBLISHED","title":"s390/dasd: Fix potential NULL pointer dereference","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Fix potential NULL pointer dereference\n\ndasd_release_space() checks the implementation of the is_ese()\ndiscipline function before calling it to determine if a given device is\nan ESE DASD.\n\nThe current usage of the logical AND operator will lead to a NULL\npointer dereference as the function is called even if the function\npointer is NULL.\n\nFix this by using the logical OR operator.","publishedAt":"2026-08-28T06:52:47.682Z","updatedAt":"2026-08-28T06:52:47.682Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"dbf2ae34d2f1390a9fc1abf3dce7f809e022caae","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"3000367a512b1283ca52230bf21f8c91dfbec45b","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"e156c70c505c6c9adce3b7be5a82025f00544709","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"3453a993a3f14c1684560ecf26585046976f6ac6","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"86cdfd061509bcde84f3145f7221ba64e3e53b1f","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"96b8e09b09539f252a5eeea6baebd93c2e3779bd","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"9973026f572db6b67570cadc30942f3014e41079","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/block/dasd_ioctl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/block/dasd_ioctl.c"]}],"references":["https://git.kernel.org/stable/c/dbf2ae34d2f1390a9fc1abf3dce7f809e022caae","https://git.kernel.org/stable/c/3000367a512b1283ca52230bf21f8c91dfbec45b","https://git.kernel.org/stable/c/cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c","https://git.kernel.org/stable/c/e156c70c505c6c9adce3b7be5a82025f00544709","https://git.kernel.org/stable/c/3453a993a3f14c1684560ecf26585046976f6ac6","https://git.kernel.org/stable/c/86cdfd061509bcde84f3145f7221ba64e3e53b1f","https://git.kernel.org/stable/c/96b8e09b09539f252a5eeea6baebd93c2e3779bd","https://git.kernel.org/stable/c/9973026f572db6b67570cadc30942f3014e41079"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80679.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80679","state":"PUBLISHED","datePublished":"2026-08-28T06:52:47.682Z","dateUpdated":"2026-08-28T06:52:47.682Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.783Z"},"containers":{"cna":{"title":"s390/dasd: Fix potential NULL pointer dereference","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Fix potential NULL pointer dereference\n\ndasd_release_space() checks the implementation of the is_ese()\ndiscipline function before calling it to determine if a given device is\nan ESE DASD.\n\nThe current usage of the logical AND operator will lead to a NULL\npointer dereference as the function is called even if the function\npointer is NULL.\n\nFix this by using the logical OR operator."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"dbf2ae34d2f1390a9fc1abf3dce7f809e022caae","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"3000367a512b1283ca52230bf21f8c91dfbec45b","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"e156c70c505c6c9adce3b7be5a82025f00544709","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"3453a993a3f14c1684560ecf26585046976f6ac6","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"86cdfd061509bcde84f3145f7221ba64e3e53b1f","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"96b8e09b09539f252a5eeea6baebd93c2e3779bd","versionType":"git"},{"version":"91dc4a197569230683ca8bad551e655a4bf14c30","status":"affected","lessThan":"9973026f572db6b67570cadc30942f3014e41079","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/block/dasd_ioctl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/block/dasd_ioctl.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/dbf2ae34d2f1390a9fc1abf3dce7f809e022caae"},{"url":"https://git.kernel.org/stable/c/3000367a512b1283ca52230bf21f8c91dfbec45b"},{"url":"https://git.kernel.org/stable/c/cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c"},{"url":"https://git.kernel.org/stable/c/e156c70c505c6c9adce3b7be5a82025f00544709"},{"url":"https://git.kernel.org/stable/c/3453a993a3f14c1684560ecf26585046976f6ac6"},{"url":"https://git.kernel.org/stable/c/86cdfd061509bcde84f3145f7221ba64e3e53b1f"},{"url":"https://git.kernel.org/stable/c/96b8e09b09539f252a5eeea6baebd93c2e3779bd"},{"url":"https://git.kernel.org/stable/c/9973026f572db6b67570cadc30942f3014e41079"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-28T06:52:47.682Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.10.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}