gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings
Priority LOW 35CWE-416Published · 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: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings __host1x_bo_unpin() drops the last reference to the mapping and frees it, so we can't dereference mapping afterwards. The cache itself outlives the mapping, so use the cache local variable instead.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00126 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.183, 6.6.148, 6.12.101 +2Red Hat: 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | 6.1.178 to before 6.1.183; 6.6.145 to before 6.6.148; 6.12.97 to before 6.12.101; 6.18.40 to before 6.18.42; 7.1.5 to before 7.1.6 | 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6 | Patch available | CNA |
- Linux VendorLinux Affected 6.1.178 to before 6.1.183; 6.6.145 to before 6.6.148; 6.12.97 to before 6.12.101; 6.18.40 to before 6.18.42; 7.1.5 to before 7.1.6 Fixed in 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6
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 |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68427
- 2026-10-03 Alias added: GHSA-8v73-w5j7-p4x2
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-20 Weakness changed · CISA ADP
References
Other 6
- https://git.kernel.org/stable/c/86a9bd8c8f422d5f3079da31e151868902fcc702
- https://git.kernel.org/stable/c/abeff53233b984571b87582bb588b4b38ef4ea50
- https://git.kernel.org/stable/c/5b7e5f84d3d4cea10c3764d2da274810a7934228
- https://git.kernel.org/stable/c/5f4de3c717d34a24d555af581947742980778c02
- https://git.kernel.org/stable/c/b773faa32b0a98c3eb2b50d96de631681e5d1157
- https://git.kernel.org/stable/c/266cddf7bd0f6c79b6c0633aef742a22bf70265b
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-2026-68427 · CVE Program
- CVE-2026-68427 · NVD
- FIRST EPSS
- GHSA-8v73-w5j7-p4x2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68427 · 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