Answer in brief
CVE-2021-4460 records a Unknown severity vulnerability in drm/amdkfd: Fix UBSAN shift-out-of-bounds warning. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <0c0356ef2498c1a250fe3846f30293f828737309 || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <1874b0ef1426b873de94c61861e38f29a8df714c || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <3fdc5182700910a685d23df57d65166e8556a266 || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <9069b1b542de8f3bbffef868aff41521b21485cf || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <50e2fc36e72d4ad672032ebf646cecb48656efe0 | 0c0356ef2498c1a250fe3846f30293f828737309, 1874b0ef1426b873de94c61861e38f29a8df714c, 3fdc5182700910a685d23df57d65166e8556a266, 9069b1b542de8f3bbffef868aff41521b21485cf, 50e2fc36e72d4ad672032ebf646cecb48656efe0 |
| Linux/Linuxgeneric | 5.4 | Not reported |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-4460 records a Unknown severity vulnerability in drm/amdkfd: Fix UBSAN shift-out-of-bounds warning. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <0c0356ef2498c1a250fe3846f30293f828737309 || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <1874b0ef1426b873de94c61861e38f29a8df714c || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <3fdc5182700910a685d23df57d65166e8556a266 || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <9069b1b542de8f3bbffef868aff41521b21485cf || >=35cdc81bfa94d10373ecae279f3c48ca858ac4fd <50e2fc36e72d4ad672032ebf646cecb48656efe0 | 0c0356ef2498c1a250fe3846f30293f828737309, 1874b0ef1426b873de94c61861e38f29a8df714c, 3fdc5182700910a685d23df57d65166e8556a266, 9069b1b542de8f3bbffef868aff41521b21485cf, 50e2fc36e72d4ad672032ebf646cecb48656efe0 |
| Linux/Linuxgeneric | 5.4 | Not reported |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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
Quoted source text, attributed separately from HOL analysis.