Log in Start free

Vulnerability · Published Oct 1, 2025 · Assigned by Linux

CVE-2021-4460drm/amdkfd: Fix UBSAN shift-out-of-bounds warning

High 7.1

In plain English

A high-severity out-of-bounds read in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.2%top 93.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix UBSAN shift-out-of-bounds warning If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up doing a shift operation where the number of bits shifted equals number of bits in the operand. This behaviour is undefined. Set num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the count is >= number of bits in the operand. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.38-1DEBIAN-CVE-2021-4460
Debian:13linux5.10.38-1DEBIAN-CVE-2021-4460
Debian:14linux5.10.38-1DEBIAN-CVE-2021-4460
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-4460
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-4460
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2021-4460

Affected products (as reported)

VendorProductVersions
Linux Linux 35cdc81bfa94d10373ecae279f3c48ca858ac4fd – before 0c0356ef2498c1a250fe3846f30293f82873730935cdc81bfa94d10373ecae279f3c48ca858ac4fd – before 1874b0ef1426b873de94c61861e38f29a8df714c35cdc81bfa94d10373ecae279f3c48ca858ac4fd – before 3fdc5182700910a685d23df57d65166e8556a26635cdc81bfa94d10373ecae279f3c48ca858ac4fd – before 9069b1b542de8f3bbffef868aff41521b21485cf35cdc81bfa94d10373ecae279f3c48ca858ac4fd – before 50e2fc36e72d4ad672032ebf646cecb48656efe0
Linux Linux 5.4

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

References