What’s Vulnerable › Vulnerabilities

CVE-2021-47490: drm/ttm: fix memleak in ttm_transfered_destroy

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-22 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: drm/ttm: fix memleak in ttm_transfered_destroy We need to cleanup the fences for ghost objects as well. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=214029 Bug: https://bugzilla.kernel.org/show_bug.cgi?id=214447

Affected products

• Linux kernel: before 5.4.157; from 5.5 before 5.10.77; from 5.11 before 5.14.16; 5.15-rc1, 5.15-rc2, 5.15-rc3, 5.15-rc4, 5.15-rc5, 5.15-rc6 (+1) — fixed in 5.10.77, 5.14.16, 5.4.157

How to fix

Upgrade to a fixed version: Linux kernel 5.10.77, 5.14.16, 5.4.157. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0db55f9a1bafbe3dac750ea669de9134922389b5
• https://git.kernel.org/stable/c/132a3d998d6753047f22152731fba2b0d6b463dd
• https://git.kernel.org/stable/c/0db55f9a1bafbe3dac750ea669de9134922389b5
• https://git.kernel.org/stable/c/132a3d998d6753047f22152731fba2b0d6b463dd
• https://git.kernel.org/stable/c/960b1fdfc39aba8f41e9e27b2de0c925c74182d9
• https://git.kernel.org/stable/c/bbc920fb320f1c241cc34ac85edaa0058922246a
• https://git.kernel.org/stable/c/bd99782f3ca491879e8524c89b1c0f40071903bd
• https://git.kernel.org/stable/c/c21b4002214c1c7e7b627b9b53375612f7aab6db

Get alerted when CVE-2021-47490 or the next vulnerability affects your stack