CVE-2021-4460
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309Patch
- https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714cPatch
- https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266Patch
- https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0Patch
- https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cfPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.