hfsplus: return error when node already exists in hfs_bnode_create (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.12 % · percentile 2 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
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.
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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-32244
- GCVE · GCVE-0-2026-45960
CERT-FR advisories
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1093 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0985 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0900 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0861 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0831 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0696 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 2.6.16.1 < 5.10.252cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.202cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.165cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.128cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.75cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.14cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 6.19.4cpe:2.3:o:linux:linux_kernel:2.6.16:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:2.6.16:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:2.6.16:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:2.6.16:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:2.6.16:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:2.6.16:rc6:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 634725a92938b0f282b17cec0b007dca77adebd2 < 1ca428769cb4737a25bd32fb4d1573cc09eeaeef ; affected 634725a92938b0f282b17cec0b007dca77adebd2 < 507a1de58c21c95ad7c44afccaf1222d1c42246b ; affected 634725a92938b0f282b17cec0b007dca77adebd2 < 986455135b95f32c1f142068e451098fc751749e ; affected 634725a92938b0f282b17cec0b007dca77adebd2 < 7b57ada854b32310f224abd61bcfec2d5790ff0a ; affected 634725a92938b0f282b17cec0b007dca77adebd2 < 51838112d9c22502333c3085ca0c0d691e7093c6 ; affected 634725a92938b0f282b17cec0b007dca77adebd2 < 2e6ff6a6fc69cc17ed10c9cb6242935d52acd52d |
| Linux · Linux | affected 2.6.16 ; unaffected 0 < 2.6.16 ; unaffected 5.10.252 ≤ 5.10.* ; unaffected 5.15.202 ≤ 5.15.* ; unaffected 6.1.165 ≤ 6.1.* ; unaffected 6.6.128 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |