rxgk: Fix potential integer overflow in length check
Priority MEDIUM 42CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CNA. 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: rxgk: Fix potential integer overflow in length check Fix potential integer overflow in rxgk_extract_token() when checking the length of the ticket. Rather than rounding up the value to be tested (which might overflow), round down the size of the available data.
Why it matters now
EPSS 0.00442 38th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.17, 6.18.27, 7.0.4 +1Red 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 | 6.16.9 to before 6.17 | 6.17 | Patch available | CNA |
| Linux | Linux | 6.17 and later | 6.18.27, 7.0.4, 7.1 | Patch available | CNA |
- Linux VendorLinux Affected 6.16.9 to before 6.17 Fixed in 6.17 Patch available CNA
- Linux VendorLinux Affected 6.17 and later Fixed in 6.18.27, 7.0.4, 7.1 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.16.9 to before 6.17; 6.17.1 to before 6.18.27; 6.19 to before 7.0.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.17:-:*:*:*:*:*:* | 6.17 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:* | 6.17 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.16.9 to before 6.17; 6.17.1 to before 6.18.27; 6.19 to before 7.0.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.17:-:*:*:*:*:*:* Versions 6.17 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:* Versions 6.17 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.17
- Fix · CNA Linux (Linux) Fixed in 6.18.27, 7.0.4, 7.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
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-2026-46039
- 2026-10-03 Alias added: GHSA-8p5g-g3v4-xpm6
- 2026-10-16 EPSS moved to the 50th–90th percentile
- 2026-10-25 EPSS moved to the below the 50th percentile
References
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-2026-46039 · CVE Program
- CVE-2026-46039 · NVD
- FIRST EPSS
- GHSA-8p5g-g3v4-xpm6 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-46039 · 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