nilfs2: fix potential oob read in nilfs_btree_check_delete()
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential oob read in nilfs_btree_check_delete() The function nilfs_btree_check_delete(), which checks whether degeneration to direct mapping occurs before deleting a b-tree entry, causes memory access outside the block buffer when retrieving the maximum key if the root node has no entries. This does not usually happen because b-tree mappings with 0 child nodes are never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen if the b-tree root node read from a device is configured that way, so fix this potential issue by adding a check for that case.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.30 and later | 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, 6.6.54, 6.10.13, 6.11.2, 6.12 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.30 and later Fixed in 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, 6.6.54, 6.10.13, 6.11.2, 6.12 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.30 to before 5.10.227; 5.11 to before 5.15.168; 5.16 to before 6.1.113; 6.2 to before 6.6.54; 6.7 to before 6.10.13; 6.11 to before 6.11.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.30 to before 5.10.227; 5.11 to before 5.15.168; 5.16 to before 6.1.113; 6.2 to before 6.6.54; 6.7 to before 6.10.13; 6.11 to before 6.11.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, 6.6.54, 6.10.13, 6.11.2, 6.12
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-47757
- 2026-10-03 Alias added: GHSA-qf78-3cfm-29pm
References
Patch 7
- https://git.kernel.org/stable/c/d20674f31626e0596ae4c1d9401dfb6739b81b58
- https://git.kernel.org/stable/c/c4f8554996e8ada3be872dfb8f60e93bcf15fb27
- https://git.kernel.org/stable/c/a8abfda768b9f33630cfbc4af6c4214f1e5681b0
- https://git.kernel.org/stable/c/257f9e5185eb6de83377caea686c306e22e871f2
- https://git.kernel.org/stable/c/a33e967b681e088a125b979975c93e3453e686cd
- https://git.kernel.org/stable/c/c4cbcc64bb31e67e02940ce060cc77f7180564cf
- https://git.kernel.org/stable/c/f9c96351aa6718b42a9f42eaf7adce0356bdb5e8
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- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-47757 · CVE Program
- CVE-2024-47757 · NVD
- FIRST EPSS
- GHSA-qf78-3cfm-29pm · GitHub Advisory Database · CC BY 4.0
- CVE-2024-47757 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences