{"api_version":"1","generated_at":"2026-05-13T20:24:52+00:00","cve":"CVE-2026-43359","urls":{"html":"https://cve.report/CVE-2026-43359","api":"https://cve.report/api/cve/CVE-2026-43359.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43359","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43359"},"summary":{"title":"btrfs: fix transaction abort on set received ioctl due to item overflow","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix transaction abort on set received ioctl due to item overflow\n\nIf the set received ioctl fails due to an item overflow when attempting to\nadd the BTRFS_UUID_KEY_RECEIVED_SUBVOL we have to abort the transaction\nsince we did some metadata updates before.\n\nThis means that if a user calls this ioctl with the same received UUID\nfield for a lot of subvolumes, we will hit the overflow, trigger the\ntransaction abort and turn the filesystem into RO mode. A malicious user\ncould exploit this, and this ioctl does not even requires that a user\nhas admin privileges (CAP_SYS_ADMIN), only that he/she owns the subvolume.\n\nFix this by doing an early check for item overflow before starting a\ntransaction. This is also race safe because we are holding the subvol_sem\nsemaphore in exclusive (write) mode.\n\nA test case for fstests will follow soon.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 15:16:46","updated_at":"2026-05-12 14:10:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d11aefe654a04fc41996d254748d6a38b6b0a7be","name":"https://git.kernel.org/stable/c/d11aefe654a04fc41996d254748d6a38b6b0a7be","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2e57b8cac2ba0d38aac76c1ecdfd8b899e3581a5","name":"https://git.kernel.org/stable/c/2e57b8cac2ba0d38aac76c1ecdfd8b899e3581a5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b19c0465e4daad5aa8f60552ea0578cf31a11b1e","name":"https://git.kernel.org/stable/c/b19c0465e4daad5aa8f60552ea0578cf31a11b1e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/87f2c46003fce4d739138aab4af1942b1afdadac","name":"https://git.kernel.org/stable/c/87f2c46003fce4d739138aab4af1942b1afdadac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b9914db13ac15aca3b74544c0bb1a2e0dad1f174","name":"https://git.kernel.org/stable/c/b9914db13ac15aca3b74544c0bb1a2e0dad1f174","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/41fb97353ff58fa4f31904c343fc8e3df2f7517d","name":"https://git.kernel.org/stable/c/41fb97353ff58fa4f31904c343fc8e3df2f7517d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43359","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43359","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 b9914db13ac15aca3b74544c0bb1a2e0dad1f174 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 b19c0465e4daad5aa8f60552ea0578cf31a11b1e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 2e57b8cac2ba0d38aac76c1ecdfd8b899e3581a5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 d11aefe654a04fc41996d254748d6a38b6b0a7be git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43359","cve":"CVE-2026-43359","epss":"0.000240000","percentile":"0.070360000","score_date":"2026-05-12","updated_at":"2026-05-13 00:11:53"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/btrfs/ioctl.c","fs/btrfs/uuid-tree.c","fs/btrfs/uuid-tree.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b9914db13ac15aca3b74544c0bb1a2e0dad1f174","status":"affected","version":"dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70","versionType":"git"},{"lessThan":"b19c0465e4daad5aa8f60552ea0578cf31a11b1e","status":"affected","version":"dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70","versionType":"git"},{"lessThan":"2e57b8cac2ba0d38aac76c1ecdfd8b899e3581a5","status":"affected","version":"dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70","versionType":"git"},{"lessThan":"d11aefe654a04fc41996d254748d6a38b6b0a7be","status":"affected","version":"dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70","versionType":"git"},{"lessThan":"41fb97353ff58fa4f31904c343fc8e3df2f7517d","status":"affected","version":"dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70","versionType":"git"},{"lessThan":"87f2c46003fce4d739138aab4af1942b1afdadac","status":"affected","version":"dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/btrfs/ioctl.c","fs/btrfs/uuid-tree.c","fs/btrfs/uuid-tree.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.12"},{"lessThan":"3.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.19","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.167","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.78","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.19","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.9","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"3.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix transaction abort on set received ioctl due to item overflow\n\nIf the set received ioctl fails due to an item overflow when attempting to\nadd the BTRFS_UUID_KEY_RECEIVED_SUBVOL we have to abort the transaction\nsince we did some metadata updates before.\n\nThis means that if a user calls this ioctl with the same received UUID\nfield for a lot of subvolumes, we will hit the overflow, trigger the\ntransaction abort and turn the filesystem into RO mode. A malicious user\ncould exploit this, and this ioctl does not even requires that a user\nhas admin privileges (CAP_SYS_ADMIN), only that he/she owns the subvolume.\n\nFix this by doing an early check for item overflow before starting a\ntransaction. This is also race safe because we are holding the subvol_sem\nsemaphore in exclusive (write) mode.\n\nA test case for fstests will follow soon."}],"providerMetadata":{"dateUpdated":"2026-05-11T22:23:03.390Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b9914db13ac15aca3b74544c0bb1a2e0dad1f174"},{"url":"https://git.kernel.org/stable/c/b19c0465e4daad5aa8f60552ea0578cf31a11b1e"},{"url":"https://git.kernel.org/stable/c/2e57b8cac2ba0d38aac76c1ecdfd8b899e3581a5"},{"url":"https://git.kernel.org/stable/c/d11aefe654a04fc41996d254748d6a38b6b0a7be"},{"url":"https://git.kernel.org/stable/c/41fb97353ff58fa4f31904c343fc8e3df2f7517d"},{"url":"https://git.kernel.org/stable/c/87f2c46003fce4d739138aab4af1942b1afdadac"}],"title":"btrfs: fix transaction abort on set received ioctl due to item overflow","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43359","datePublished":"2026-05-08T14:21:14.357Z","dateReserved":"2026-05-01T14:12:56.005Z","dateUpdated":"2026-05-11T22:23:03.390Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 15:16:46","lastModifiedDate":"2026-05-12 14:10:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43359","Ordinal":"1","Title":"btrfs: fix transaction abort on set received ioctl due to item o","CVE":"CVE-2026-43359","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43359","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix transaction abort on set received ioctl due to item overflow\n\nIf the set received ioctl fails due to an item overflow when attempting to\nadd the BTRFS_UUID_KEY_RECEIVED_SUBVOL we have to abort the transaction\nsince we did some metadata updates before.\n\nThis means that if a user calls this ioctl with the same received UUID\nfield for a lot of subvolumes, we will hit the overflow, trigger the\ntransaction abort and turn the filesystem into RO mode. A malicious user\ncould exploit this, and this ioctl does not even requires that a user\nhas admin privileges (CAP_SYS_ADMIN), only that he/she owns the subvolume.\n\nFix this by doing an early check for item overflow before starting a\ntransaction. This is also race safe because we are holding the subvol_sem\nsemaphore in exclusive (write) mode.\n\nA test case for fstests will follow soon.","Type":"Description","Title":"btrfs: fix transaction abort on set received ioctl due to item o"}]}}}