CVSS 7.8 · High EPSS 0,16%
Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: lib: cpu_rmap: Avoid use after free on rmap->obj array entries When calling irq_set_affinity_notifier() with NULL at the notify argument, it will cause freeing of the glue pointer in the corresponding array entry but will leave the pointer in the array. A subsequent call to free_irq_cpu_rmap() will try to free this entry again leading to possible use after free. Fix that by setting NULL to the array entry and checking that we have non-zero at the array entry when iterating over the array in free_irq_cpu_rmap(). The current code does not suffer from this since there are no cases where irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the notify arg) is called, followed by a call to free_irq_cpu_rmap() so we don't hit and issue. Subsequent patches in this series excersize this flow, hence the required fix.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 3.8.1 hingga sebelum 4.14.316 |
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.284 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.244 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.181 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.113 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.30 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.3.4 |
| linux | linux kernel | Versi 3.8 |
| linux | linux kernel | Versi 3.8 rc4 |
| linux | linux kernel | Versi 3.8 rc5 |
| linux | linux kernel | Versi 3.8 rc6 |
| linux | linux kernel | Versi 3.8 rc7 |