ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate
Priority LOW 24CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate When doing cleanup, if flags without OCFS2_BH_READAHEAD, it may trigger NULL pointer dereference in the following ocfs2_set_buffer_uptodate() if bh is NULL.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 4.19.323, 4.5, 4.10 +9
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 | 4.19.87 to before 4.19.323; 4.4.204 to before 4.5; 4.9.204 to before 4.10; 4.14.157 to before 4.15 | 4.19.323, 4.5, 4.10, 4.15 | Patch available | CNA |
| Linux | Linux | 4.20 and later | 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, 6.6.55, 6.10.14, 6.11.3, 6.12 | Patch available | CNA |
- Linux VendorLinux Affected 4.19.87 to before 4.19.323; 4.4.204 to before 4.5; 4.9.204 to before 4.10; 4.14.157 to before 4.15 Fixed in 4.19.323, 4.5, 4.10, 4.15 Patch available CNA
- Linux VendorLinux Affected 4.20 and later Fixed in 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, 6.6.55, 6.10.14, 6.11.3, 6.12 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.20 to before 5.10.227; 5.11 to before 5.15.168; 5.16 to before 6.1.113; 6.2 to before 6.6.55; 6.7 to before 6.10.14; 6.11 to before 6.11.3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4.204:*:*:*:*:*:*:* | 4.4.204 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.9.204:*:*:*:*:*:*:* | 4.9.204 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.14.157:*:*:*:*:*:*:* | 4.14.157 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.19.87:*:*:*:*:*:*:* | 4.19.87 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.20 to before 5.10.227; 5.11 to before 5.15.168; 5.16 to before 6.1.113; 6.2 to before 6.6.55; 6.7 to before 6.10.14; 6.11 to before 6.11.3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4.204:*:*:*:*:*:*:* Versions 4.4.204 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.9.204:*:*:*:*:*:*:* Versions 4.9.204 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.14.157:*:*:*:*:*:*:* Versions 4.14.157 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.19.87:*:*:*:*:*:*:* Versions 4.19.87 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.323, 4.5, 4.10, 4.15
- Fix · CNA Linux (Linux) Fixed in 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, 6.6.55, 6.10.14, 6.11.3, 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-2024-49877
- 2026-10-03 Alias added: GHSA-7jfp-wvrj-m47g
References
Patch 7
- https://git.kernel.org/stable/c/61b84013e560382cbe7dd56758be3154d43a3988
- https://git.kernel.org/stable/c/df944dc46d06af65a75191183d52be017e6b9dbe
- https://git.kernel.org/stable/c/01cb2e751cc61ade454c9bc1aaa2eac1f8197112
- https://git.kernel.org/stable/c/d52c5652e7dcb7a0648bbb8642cc3e617070ab49
- https://git.kernel.org/stable/c/46b1edf0536a5291a8ad2337f88c926214b209d9
- https://git.kernel.org/stable/c/4846e72ab5a0726e49ad4188b9d9df091ae78c64
- https://git.kernel.org/stable/c/33b525cef4cff49e216e4133cc48452e11c0391e
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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-2024-49877 · CVE Program
- CVE-2024-49877 · NVD
- FIRST EPSS
- GHSA-7jfp-wvrj-m47g · GitHub Advisory Database · CC BY 4.0
- CVE-2024-49877 · Red Hat security data · CC BY 4.0
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