ptp: fix integer overflow in max_vclocks_store
Priority LOW 34CWE-190Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: ptp: fix integer overflow in max_vclocks_store On 32bit systems, the "4 * max" multiply can overflow. Use kcalloc() to do the allocation to prevent this.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00277 20th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.15.162, 6.1.96, 6.6.36 +2Red Hat: 3 without a fix
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 | 5.14 and later | 5.15.162, 6.1.96, 6.6.36, 6.9.7, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 5.14 and later Fixed in 5.15.162, 6.1.96, 6.6.36, 6.9.7, 6.10 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.14 to before 5.15.162; 5.16 to before 6.1.96; 6.2 to before 6.6.36; 6.7 to before 6.9.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* | 6.10 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* | 6.10 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* | 6.10 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* | 6.10 rc4 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.14 to before 5.15.162; 5.16 to before 6.1.96; 6.2 to before 6.6.36; 6.7 to before 6.9.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* Versions 6.10 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* Versions 6.10 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* Versions 6.10 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* Versions 6.10 rc4 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.162, 6.1.96, 6.6.36, 6.9.7, 6.10
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 |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2024-40994
- 2026-10-03 Alias added: GHSA-fpf5-xw2p-f3m5
References
Patch 5
- https://git.kernel.org/stable/c/4b03da87d0b7074c93d9662c6e1a8939f9b8b86e
- https://git.kernel.org/stable/c/d50d62d5e6ee6aa03c00bddb91745d0b632d3b0f
- https://git.kernel.org/stable/c/666e934d749e50a37f3796caaf843a605f115b6f
- https://git.kernel.org/stable/c/e1fccfb4638ee6188377867f6015d0ce35764a8e
- https://git.kernel.org/stable/c/81d23d2a24012e448f651e007fac2cfd20a45ce0
More Linux Kernel 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-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
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-40994 · CVE Program
- CVE-2024-40994 · NVD
- FIRST EPSS
- GHSA-fpf5-xw2p-f3m5 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-40994 · Red Hat security data · CC BY 4.0
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