Tracker / CVE-2024-26884
CVE-2024-26884
Alta 7.8
In 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.
Prodotti e versioni affette
| linux | linux_kernel · 3.19 → 4.19.311 |
|---|---|
| linux | linux_kernel · 4.20 → 5.4.273 |
| linux | linux_kernel · 5.11 → 5.15.153 |
| linux | linux_kernel · 5.16 → 6.1.83 |
| linux | linux_kernel · 5.5 → 5.10.214 |
| linux | linux_kernel · 6.2 → 6.6.23 |
| linux | linux_kernel · 6.7 → 6.7.11 |
| linux | linux_kernel · 6.8 → 6.8.2 |
Analisi
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