{"id":"CVE-2026-45960","state":"PUBLISHED","title":"hfsplus: return error when node already exists in hfs_bnode_create","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhfsplus: return error when node already exists in hfs_bnode_create\n\nWhen hfs_bnode_create() finds that a node is already hashed (which should\nnot happen in normal operation), it currently returns the existing node\nwithout incrementing its reference count. This causes a reference count\ninconsistency that leads to a kernel panic when the node is later freed\nin hfs_bnode_put():\n\n    kernel BUG at fs/hfsplus/bnode.c:676!\n    BUG_ON(!atomic_read(&node->refcnt))\n\nThis scenario can occur when hfs_bmap_alloc() attempts to allocate a node\nthat is already in use (e.g., when node 0's bitmap bit is incorrectly\nunset), or due to filesystem corruption.\n\nReturning an existing node from a create path is not normal operation.\n\nFix this by returning ERR_PTR(-EEXIST) instead of the node when it's\nalready hashed. This properly signals the error condition to callers,\nwhich already check for IS_ERR() return values.","publishedAt":"2026-05-27T12:18:16.851Z","updatedAt":"2026-05-27T12:18:16.851Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"1ca428769cb4737a25bd32fb4d1573cc09eeaeef","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"507a1de58c21c95ad7c44afccaf1222d1c42246b","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"986455135b95f32c1f142068e451098fc751749e","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"7b57ada854b32310f224abd61bcfec2d5790ff0a","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"51838112d9c22502333c3085ca0c0d691e7093c6","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"2e6ff6a6fc69cc17ed10c9cb6242935d52acd52d","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"2e9185a42e0e237c74435fd092b7c34537c62156","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"d8a73cc46c8462a969a7516131feb3096f4c49d3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfsplus/bnode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.16","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfsplus/bnode.c"]}],"references":["https://git.kernel.org/stable/c/1ca428769cb4737a25bd32fb4d1573cc09eeaeef","https://git.kernel.org/stable/c/507a1de58c21c95ad7c44afccaf1222d1c42246b","https://git.kernel.org/stable/c/986455135b95f32c1f142068e451098fc751749e","https://git.kernel.org/stable/c/7b57ada854b32310f224abd61bcfec2d5790ff0a","https://git.kernel.org/stable/c/51838112d9c22502333c3085ca0c0d691e7093c6","https://git.kernel.org/stable/c/2e6ff6a6fc69cc17ed10c9cb6242935d52acd52d","https://git.kernel.org/stable/c/2e9185a42e0e237c74435fd092b7c34537c62156","https://git.kernel.org/stable/c/d8a73cc46c8462a969a7516131feb3096f4c49d3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45960.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45960","state":"PUBLISHED","datePublished":"2026-05-27T12:18:16.851Z","dateUpdated":"2026-05-27T12:18:16.851Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.089Z"},"containers":{"cna":{"title":"hfsplus: return error when node already exists in hfs_bnode_create","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhfsplus: return error when node already exists in hfs_bnode_create\n\nWhen hfs_bnode_create() finds that a node is already hashed (which should\nnot happen in normal operation), it currently returns the existing node\nwithout incrementing its reference count. This causes a reference count\ninconsistency that leads to a kernel panic when the node is later freed\nin hfs_bnode_put():\n\n    kernel BUG at fs/hfsplus/bnode.c:676!\n    BUG_ON(!atomic_read(&node->refcnt))\n\nThis scenario can occur when hfs_bmap_alloc() attempts to allocate a node\nthat is already in use (e.g., when node 0's bitmap bit is incorrectly\nunset), or due to filesystem corruption.\n\nReturning an existing node from a create path is not normal operation.\n\nFix this by returning ERR_PTR(-EEXIST) instead of the node when it's\nalready hashed. This properly signals the error condition to callers,\nwhich already check for IS_ERR() return values."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"1ca428769cb4737a25bd32fb4d1573cc09eeaeef","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"507a1de58c21c95ad7c44afccaf1222d1c42246b","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"986455135b95f32c1f142068e451098fc751749e","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"7b57ada854b32310f224abd61bcfec2d5790ff0a","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"51838112d9c22502333c3085ca0c0d691e7093c6","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"2e6ff6a6fc69cc17ed10c9cb6242935d52acd52d","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"2e9185a42e0e237c74435fd092b7c34537c62156","versionType":"git"},{"version":"634725a92938b0f282b17cec0b007dca77adebd2","status":"affected","lessThan":"d8a73cc46c8462a969a7516131feb3096f4c49d3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfsplus/bnode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.16","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/hfsplus/bnode.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1ca428769cb4737a25bd32fb4d1573cc09eeaeef"},{"url":"https://git.kernel.org/stable/c/507a1de58c21c95ad7c44afccaf1222d1c42246b"},{"url":"https://git.kernel.org/stable/c/986455135b95f32c1f142068e451098fc751749e"},{"url":"https://git.kernel.org/stable/c/7b57ada854b32310f224abd61bcfec2d5790ff0a"},{"url":"https://git.kernel.org/stable/c/51838112d9c22502333c3085ca0c0d691e7093c6"},{"url":"https://git.kernel.org/stable/c/2e6ff6a6fc69cc17ed10c9cb6242935d52acd52d"},{"url":"https://git.kernel.org/stable/c/2e9185a42e0e237c74435fd092b7c34537c62156"},{"url":"https://git.kernel.org/stable/c/d8a73cc46c8462a969a7516131feb3096f4c49d3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:18:16.851Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.16","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}