{"api_version":"1","generated_at":"2026-06-25T02:26:00+00:00","cve":"CVE-2026-53064","urls":{"html":"https://cve.report/CVE-2026-53064","api":"https://cve.report/api/cve/CVE-2026-53064.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53064","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53064"},"summary":{"title":"dm cache: fix null-deref with concurrent writes in passthrough mode","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix null-deref with concurrent writes in passthrough mode\n\nIn passthrough mode, when dm-cache starts to invalidate a cache\nentry and bio prison cell lock fails due to concurrent write to\nthe same cached block, mg->cell remains NULL. The error path in\ninvalidate_complete() attempts to unlock and free the cell\nunconditionally, causing a NULL pointer dereference:\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 0 UID: 0 PID: 134 Comm: fio Not tainted 6.19.0-rc7 #3 PREEMPT\nRIP: 0010:dm_cell_unlock_v2+0x3f/0x210\n<snip>\nCall Trace:\n invalidate_complete+0xef/0x430\n map_bio+0x130f/0x1a10\n cache_map+0x320/0x6b0\n __map_bio+0x458/0x510\n dm_submit_bio+0x40e/0x16d0\n __submit_bio+0x419/0x870\n<snip>\n\nReproduce steps:\n\n1. Create a cache device\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 131072 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 262144 linear /dev/sdc 262144\"\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\n2. Promote the first data block into cache\n\nfio --filename=/dev/mapper/cache --name=populate --rw=write --bs=4k \\\n--direct=1 --size=64k\n\n3. Reload the cache into passthrough mode\n\ndmsetup suspend cache\ndmsetup reload cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 passthrough smq 0\"\ndmsetup resume cache\n\n4. Write to the first cached block concurrently\n\nfio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \\\n--randrepeat=0 --direct=1 --numjobs=2 --size 64k\n\nFix by checking if mg->cell is valid before attempting to unlock it.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:19","updated_at":"2026-06-24 17:17:19"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/01264a6a3a3ad7ac1d73443299cd5a9568002454","name":"https://git.kernel.org/stable/c/01264a6a3a3ad7ac1d73443299cd5a9568002454","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/25dcc1989c194ba2b5fb6d03cbb9b83814ac0d15","name":"https://git.kernel.org/stable/c/25dcc1989c194ba2b5fb6d03cbb9b83814ac0d15","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ee38fb00e1a80f46a4990e38f25ecb04ae7b7417","name":"https://git.kernel.org/stable/c/ee38fb00e1a80f46a4990e38f25ecb04ae7b7417","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0aa745fea1f8dc81bcdd0a45e215b6706727b482","name":"https://git.kernel.org/stable/c/0aa745fea1f8dc81bcdd0a45e215b6706727b482","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a2635d541a93fd111e743cf14b6275dc81be2abc","name":"https://git.kernel.org/stable/c/a2635d541a93fd111e743cf14b6275dc81be2abc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7d1f98d668ee34c1d15bdc0420fdd062f24a27c0","name":"https://git.kernel.org/stable/c/7d1f98d668ee34c1d15bdc0420fdd062f24a27c0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/df3b8ef06cc62de4fca5d2108e285085b3cffd44","name":"https://git.kernel.org/stable/c/df3b8ef06cc62de4fca5d2108e285085b3cffd44","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c7fb6bc864c4910b344dafa36dd5028e9b980768","name":"https://git.kernel.org/stable/c/c7fb6bc864c4910b344dafa36dd5028e9b980768","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53064","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53064","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f 01264a6a3a3ad7ac1d73443299cd5a9568002454 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f ee38fb00e1a80f46a4990e38f25ecb04ae7b7417 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f c7fb6bc864c4910b344dafa36dd5028e9b980768 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f 0aa745fea1f8dc81bcdd0a45e215b6706727b482 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f a2635d541a93fd111e743cf14b6275dc81be2abc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f 25dcc1989c194ba2b5fb6d03cbb9b83814ac0d15 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f df3b8ef06cc62de4fca5d2108e285085b3cffd44 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b29d4986d0da1a27cd35917cdb433672f5c95d7f 7d1f98d668ee34c1d15bdc0420fdd062f24a27c0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.258 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.141 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.91 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.33 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.10 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * 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/md/dm-cache-target.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"01264a6a3a3ad7ac1d73443299cd5a9568002454","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"},{"lessThan":"ee38fb00e1a80f46a4990e38f25ecb04ae7b7417","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"},{"lessThan":"c7fb6bc864c4910b344dafa36dd5028e9b980768","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"},{"lessThan":"0aa745fea1f8dc81bcdd0a45e215b6706727b482","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"},{"lessThan":"a2635d541a93fd111e743cf14b6275dc81be2abc","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"},{"lessThan":"25dcc1989c194ba2b5fb6d03cbb9b83814ac0d15","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"},{"lessThan":"df3b8ef06cc62de4fca5d2108e285085b3cffd44","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"},{"lessThan":"7d1f98d668ee34c1d15bdc0420fdd062f24a27c0","status":"affected","version":"b29d4986d0da1a27cd35917cdb433672f5c95d7f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/md/dm-cache-target.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix null-deref with concurrent writes in passthrough mode\n\nIn passthrough mode, when dm-cache starts to invalidate a cache\nentry and bio prison cell lock fails due to concurrent write to\nthe same cached block, mg->cell remains NULL. The error path in\ninvalidate_complete() attempts to unlock and free the cell\nunconditionally, causing a NULL pointer dereference:\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 0 UID: 0 PID: 134 Comm: fio Not tainted 6.19.0-rc7 #3 PREEMPT\nRIP: 0010:dm_cell_unlock_v2+0x3f/0x210\n<snip>\nCall Trace:\n invalidate_complete+0xef/0x430\n map_bio+0x130f/0x1a10\n cache_map+0x320/0x6b0\n __map_bio+0x458/0x510\n dm_submit_bio+0x40e/0x16d0\n __submit_bio+0x419/0x870\n<snip>\n\nReproduce steps:\n\n1. Create a cache device\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 131072 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 262144 linear /dev/sdc 262144\"\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\n2. Promote the first data block into cache\n\nfio --filename=/dev/mapper/cache --name=populate --rw=write --bs=4k \\\n--direct=1 --size=64k\n\n3. Reload the cache into passthrough mode\n\ndmsetup suspend cache\ndmsetup reload cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 passthrough smq 0\"\ndmsetup resume cache\n\n4. Write to the first cached block concurrently\n\nfio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \\\n--randrepeat=0 --direct=1 --numjobs=2 --size 64k\n\nFix by checking if mg->cell is valid before attempting to unlock it."}],"providerMetadata":{"dateUpdated":"2026-06-24T16:30:07.536Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/01264a6a3a3ad7ac1d73443299cd5a9568002454"},{"url":"https://git.kernel.org/stable/c/ee38fb00e1a80f46a4990e38f25ecb04ae7b7417"},{"url":"https://git.kernel.org/stable/c/c7fb6bc864c4910b344dafa36dd5028e9b980768"},{"url":"https://git.kernel.org/stable/c/0aa745fea1f8dc81bcdd0a45e215b6706727b482"},{"url":"https://git.kernel.org/stable/c/a2635d541a93fd111e743cf14b6275dc81be2abc"},{"url":"https://git.kernel.org/stable/c/25dcc1989c194ba2b5fb6d03cbb9b83814ac0d15"},{"url":"https://git.kernel.org/stable/c/df3b8ef06cc62de4fca5d2108e285085b3cffd44"},{"url":"https://git.kernel.org/stable/c/7d1f98d668ee34c1d15bdc0420fdd062f24a27c0"}],"title":"dm cache: fix null-deref with concurrent writes in passthrough mode","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53064","datePublished":"2026-06-24T16:30:07.536Z","dateReserved":"2026-06-09T07:44:35.382Z","dateUpdated":"2026-06-24T16:30:07.536Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:19","lastModifiedDate":"2026-06-24 17:17:19","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53064","Ordinal":"1","Title":"dm cache: fix null-deref with concurrent writes in passthrough m","CVE":"CVE-2026-53064","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53064","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix null-deref with concurrent writes in passthrough mode\n\nIn passthrough mode, when dm-cache starts to invalidate a cache\nentry and bio prison cell lock fails due to concurrent write to\nthe same cached block, mg->cell remains NULL. The error path in\ninvalidate_complete() attempts to unlock and free the cell\nunconditionally, causing a NULL pointer dereference:\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 0 UID: 0 PID: 134 Comm: fio Not tainted 6.19.0-rc7 #3 PREEMPT\nRIP: 0010:dm_cell_unlock_v2+0x3f/0x210\n<snip>\nCall Trace:\n invalidate_complete+0xef/0x430\n map_bio+0x130f/0x1a10\n cache_map+0x320/0x6b0\n __map_bio+0x458/0x510\n dm_submit_bio+0x40e/0x16d0\n __submit_bio+0x419/0x870\n<snip>\n\nReproduce steps:\n\n1. Create a cache device\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 131072 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 262144 linear /dev/sdc 262144\"\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\n2. Promote the first data block into cache\n\nfio --filename=/dev/mapper/cache --name=populate --rw=write --bs=4k \\\n--direct=1 --size=64k\n\n3. Reload the cache into passthrough mode\n\ndmsetup suspend cache\ndmsetup reload cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 passthrough smq 0\"\ndmsetup resume cache\n\n4. Write to the first cached block concurrently\n\nfio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \\\n--randrepeat=0 --direct=1 --numjobs=2 --size 64k\n\nFix by checking if mg->cell is valid before attempting to unlock it.","Type":"Description","Title":"dm cache: fix null-deref with concurrent writes in passthrough m"}]}}}