{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74379","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.890Z","datePublished":"2026-08-15T05:58:57.024Z","dateUpdated":"2026-08-17T05:18:16.387Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:18:16.387Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndax/kmem: account for partial discontiguous resource upon removal\n\nWhen dev_dax_kmem_probe() partially succeeds (at least one range is\nmapped) but a subsequent range fails request_mem_region() or\nadd_memory_driver_managed(), the probe silently continues, ultimately\nreturning success, but with the corresponding range resource NULL'ed out.\n\ndev_dax_kmem_remove() iterates over all dax_device ranges regardless of if\nthe underlying resource exists.  When remove_memory() is called later, it\nreturns 0 because the memory was never added which causes\ndev_dax_kmem_remove() to incorrectly assume the (nonexistent) resource can\nbe removed and attempts cleanup on a NULL pointer.\n\nFix this by skipping these ranges altogether, noting that these cases are\nconsidered success, such that the cleanup is still reached when all\nactually-added ranges are successfully removed."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dax/kmem.c"],"versions":[{"version":"60e93dc097f7f13a16a7e4b75b8803eb2adbb721","lessThan":"ef4fc53898bd6c4d0119cc6d419ebef7f2560f31","status":"affected","versionType":"git"},{"version":"60e93dc097f7f13a16a7e4b75b8803eb2adbb721","lessThan":"5d3139abb9d1671fa5e42c3d6d8cb3b05479c5bb","status":"affected","versionType":"git"},{"version":"60e93dc097f7f13a16a7e4b75b8803eb2adbb721","lessThan":"d47b0b8a69a13e06afafa54723f3e8c99b0c788f","status":"affected","versionType":"git"},{"version":"60e93dc097f7f13a16a7e4b75b8803eb2adbb721","lessThan":"799e54c510a03a65a57627018a817838d72f35bd","status":"affected","versionType":"git"},{"version":"60e93dc097f7f13a16a7e4b75b8803eb2adbb721","lessThan":"598ed7393a639c7547b28ff3e14db9f1ac37c132","status":"affected","versionType":"git"},{"version":"60e93dc097f7f13a16a7e4b75b8803eb2adbb721","lessThan":"30ea97affbcce236c57287c82dc6ef7a29c63b76","status":"affected","versionType":"git"},{"version":"60e93dc097f7f13a16a7e4b75b8803eb2adbb721","lessThan":"8aa442cfce79e2d69e72fc8e0c0864ac2971149d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dax/kmem.c"],"versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"5.10","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ef4fc53898bd6c4d0119cc6d419ebef7f2560f31"},{"url":"https://git.kernel.org/stable/c/5d3139abb9d1671fa5e42c3d6d8cb3b05479c5bb"},{"url":"https://git.kernel.org/stable/c/d47b0b8a69a13e06afafa54723f3e8c99b0c788f"},{"url":"https://git.kernel.org/stable/c/799e54c510a03a65a57627018a817838d72f35bd"},{"url":"https://git.kernel.org/stable/c/598ed7393a639c7547b28ff3e14db9f1ac37c132"},{"url":"https://git.kernel.org/stable/c/30ea97affbcce236c57287c82dc6ef7a29c63b76"},{"url":"https://git.kernel.org/stable/c/8aa442cfce79e2d69e72fc8e0c0864ac2971149d"}],"title":"dax/kmem: account for partial discontiguous resource upon removal","x_generator":{"engine":"bippy-1.2.0"}}}}