CVE-2026-45960
In the Linux kernel, the following vulnerability has been resolved: hfsplus: return error when node already exists in hfs_bnode_create When hfs_bnode_create() finds that a node is already hashed (which should not happen in normal operation), it…
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: hfsplus: return error when node already exists in hfs_bnode_create When hfs_bnode_create() finds that a node is already hashed (which should not happen in normal operation), it currently returns the existing node without incrementing its reference count. This causes a reference count inconsistency that leads to a kernel panic when the node is later freed in hfs_bnode_put(): kernel BUG at fs/hfsplus/bnode.c:676! BUG_ON(!atomic_read(&node->refcnt)) This scenario can occur when hfs_bmap_alloc() attempts to allocate a node that is already in use (e.g., when node 0's bitmap bit is incorrectly unset), or due to filesystem corruption. Returning an existing node from a create path is not normal operation. Fix this by returning ERR_PTR(-EEXIST) instead of the node when it's already hashed. This properly signals the error condition to callers, which already check for IS_ERR() return values.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1ca428769cb4737a25bd32fb4d1573cc09eeaeefPatch
- https://git.kernel.org/stable/c/2e6ff6a6fc69cc17ed10c9cb6242935d52acd52dPatch
- https://git.kernel.org/stable/c/2e9185a42e0e237c74435fd092b7c34537c62156Patch
- https://git.kernel.org/stable/c/507a1de58c21c95ad7c44afccaf1222d1c42246bPatch
- https://git.kernel.org/stable/c/51838112d9c22502333c3085ca0c0d691e7093c6Patch
- https://git.kernel.org/stable/c/7b57ada854b32310f224abd61bcfec2d5790ff0aPatch
- https://git.kernel.org/stable/c/986455135b95f32c1f142068e451098fc751749ePatch
- https://git.kernel.org/stable/c/d8a73cc46c8462a969a7516131feb3096f4c49d3Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.