CVE-2026-68427

gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings

State: Published
Severity: 7.8 High
Published: Aug 10, 2026
Updated: Oct 19, 2026
Reserved: Jul 30, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	af755456299d44e4ed6af3b7c70a7f03ea37fdf1 to before 86a9bd8c8f422d5f3079da31e151868902fcc702Affected 71c017b3f83ff72638f2a1b1d6d4e7bc61d30231 to before abeff53233b984571b87582bb588b4b38ef4ea50Affected 0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602 to before 5b7e5f84d3d4cea10c3764d2da274810a7934228Affected 8c0d3cf0d5108c96317e0eca92b60dd368867cef to before 5f4de3c717d34a24d555af581947742980778c02Affected df63c76f9c8d881ca7bce1aecfba512328d0527d to before b773faa32b0a98c3eb2b50d96de631681e5d1157Affected 3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc to before 266cddf7bd0f6c79b6c0633aef742a22bf70265bAffected
LinuxLinux	6.1.178 to before 6.1.183Affected 6.6.145 to before 6.6.148Affected 6.12.97 to before 6.12.101Affected 6.18.40 to before 6.18.42Affected 7.1.5 to before 7.1.6Affected

Product

Versions

LinuxLinux

af755456299d44e4ed6af3b7c70a7f03ea37fdf1 to before 86a9bd8c8f422d5f3079da31e151868902fcc702Affected
71c017b3f83ff72638f2a1b1d6d4e7bc61d30231 to before abeff53233b984571b87582bb588b4b38ef4ea50Affected
0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602 to before 5b7e5f84d3d4cea10c3764d2da274810a7934228Affected
8c0d3cf0d5108c96317e0eca92b60dd368867cef to before 5f4de3c717d34a24d555af581947742980778c02Affected
df63c76f9c8d881ca7bce1aecfba512328d0527d to before b773faa32b0a98c3eb2b50d96de631681e5d1157Affected
3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc to before 266cddf7bd0f6c79b6c0633aef742a22bf70265bAffected

LinuxLinux

6.1.178 to before 6.1.183Affected
6.6.145 to before 6.6.148Affected
6.12.97 to before 6.12.101Affected
6.18.40 to before 6.18.42Affected
7.1.5 to before 7.1.6Affected

References

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