CVE-2023-52704
freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL
Reported by linux · Published May 21, 2024
In the Linux kernel, the following vulnerability has been resolved: freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL Tetsuo-San noted that commit f5d39b020809 ("freezer,sched: Rewrite core freezer logic") broke call_usermodehelper_exec() for the KILLABLE case. Specifically it was missed that the second, unconditional, wait_for_completion() was not optional and ensures the on-stack completion is unused before going out-of-scope.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| kernel-headers | Amazon Linux | 6.1.15-28.43.amzn2023 |
| bpftool | Amazon Linux | 6.1.15-28.43.amzn2023 |
| kernel-devel | Amazon Linux | 6.1.15-28.43.amzn2023 |
| perf | Amazon Linux | 6.1.15-28.43.amzn2023 |
| kernel | Amazon Linux | 6.1.15-28.43.amzn2023 |
| python3-perf | Amazon Linux | 6.1.15-28.43.amzn2023 |
| kernel-livepatch-6.1.15-28.43 | Amazon Linux | 1.0-0.amzn2023 |
| kernel-libbpf | Amazon Linux | 6.1.15-28.43.amzn2023 |
| Linux | Linux | eedeb787ebb53de5c5dcf7b7b39d01bf1b0f037d |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | f5d39b020809146cc28e6e73369bf8065e0310aa, f5d39b020809146cc28e6e73369bf8065e0310aa |
| Linux | Linux | 6.1, 0, 6.1.13 |
| amazon:2023 | kernel-headers | 0 |
| amazon:2023 | bpftool | 0 |
| amazon:2023 | kernel-devel | 0 |
| amazon:2023 | perf | 0 |
| amazon:2023 | kernel | 0 |
| amazon:2023 | python3-perf | 0 |
| amazon:2023 | kernel-livepatch-6.1.15-28.43 | 0 |
| amazon:2023 | kernel-libbpf | 0 |
| Linux | Linux | 6.1, *, 0 |
| amazon:2023 | kernel-tools | 0 |
| amazon:2023 | kernel-tools-devel | 0 |
| amazon:2023 | kernel-libbpf-static | 0 |
| amazon:2023 | kernel-libbpf-devel | 0 |
| linux | linux_kernel | 6.1, 6.1 |
Timeline
- May 21, 2024 CVE Published
- May 22, 2024 EPSS Score (30 in total, the first dated here)
- Oct 5, 2024 Coalition ESS Score (5 in total, the first dated here)
- Jan 25, 2026 Security Advisory (259 in total, the first dated here)
- Oct 30, 2026 Distribution Patch (166 in total, the first dated here)
Query this with the API
The same record, from the CLI:
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