CVE-2024-26884 Detail
Modified
This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes. DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf: Fix hashtab overflow check on 32-bit arches The hashtab code relies on roundup_pow_of_two() to compute the number of hash buckets, and contains an overflow check by checking if the resulting value is 0. However, on 32-bit arches, the roundup code itself can overflow by doing a 32-bit left-shift of an unsigned long value, which is undefined behaviour, so it is not guaranteed to truncate neatly. This was triggered by syzbot on the DEVMAP_HASH type, which contains the same check, copied from the hashtab code. So apply the same fix to hashtab, by moving the overflow check to before the roundup. Metrics
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Known Affected Software Configurations Switch to CPE 2.2 Configuration 1 ( hide )
Denotes Vulnerable Software Quick InfoCVE Dictionary Entry:CVE-2024-26884 NVD Published Date: 04/17/2024 NVD Last Modified: 11/21/2024 Source: kernel.org |
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