fs/sysv: Null check to prevent null-ptr-deref bug
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Partial Red Hat: 1 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/sysv: Null check to prevent null-ptr-deref bug sb_getblk(inode->i_sb, parent) return a null ptr and taking lock on that leads to the null-ptr-deref bug.
Why it matters now
EPSS 0.00211 11th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.14.322, 4.19.291, 5.4.253 +5Red Hat: 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.19 and later | 4.14.322, 4.19.291, 5.4.253, 5.10.190, 5.15.126, 6.1.45, 6.4.10, 6.5 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.19 and later Fixed in 4.14.322, 4.19.291, 5.4.253, 5.10.190, 5.15.126, 6.1.45, 6.4.10, 6.5 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.14.322, 4.19.291, 5.4.253, 5.10.190, 5.15.126, 6.1.45, 6.4.10, 6.5
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
Not affected: 4 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-54264
- 2026-10-03 Alias added: GHSA-vrgf-cf4x-v6w6
References
Other 8
- https://git.kernel.org/stable/c/e976988bc245ec3768cc0f76bed7d05488a7dd0f
- https://git.kernel.org/stable/c/baa60c66a310c50785289b0ede6fdce8ec3219c7
- https://git.kernel.org/stable/c/0a44ceba77c3267f8505dda102a59367dc24caee
- https://git.kernel.org/stable/c/7f740bc696d4617f8ee44565e8ac0d36278a1e91
- https://git.kernel.org/stable/c/afd9a31b5aa4b3747f382d44a7b03b7b5d0b7635
- https://git.kernel.org/stable/c/1416eebaad80bdc85ad9f97f27242011b031e2a9
- https://git.kernel.org/stable/c/e28f376dd8dfcc4e880ac101184132bc08703f6e
- https://git.kernel.org/stable/c/ea2b62f305893992156a798f665847e0663c9f41
More Linux vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2023-54264 · CVE Program
- CVE-2023-54264 · NVD
- FIRST EPSS
- GHSA-vrgf-cf4x-v6w6 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-54264 · 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