Yüksek CVSS 7.1
CVE-2024-36916: Linux Kernel: sınır dışı okuma
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: blk-iocost: avoid out of bounds shift UBSAN catches undefined behavior in blk-iocost, where sometimes iocg->delay is shifted right by a number that is too large, resulting in undefined behavior on some architectures. [ 186.556576] ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in block/blk-iocost.c:1366:23 shift exponent 64 is too large for 64-bit type 'u64' (aka 'unsigned long long') CPU: 16 PID: 0 Comm: swapper/16 Tainted: G S E N 6.9.0-0_fbk700_debug_rc2_kbuilder_0_gc85af715cac0 #1 Hardware name: Quanta Twin Lakes MP/Twin Lakes Passive MP, BIOS F09_3A23 12/08/2020 Call Trace: <IRQ> dump_stack_lvl+0x8f/0xe0 __ubsan_handle_shift_out_of_bounds+0x22c/0x280 iocg_kick_delay+0x30b/0x310 ioc_timer_fn+0x2fb/0x1f80 __run_timer_base+0x1b6/0x250 ... Avoid that undefined behavior by simply taking the "delay = 0" branch if the shift is too large. I am not sure what the symptoms of an undefined value delay will be, but I suspect it could be more than a little annoying to debug.
Özet bilgiler
- Ürün
- Linux Linux Kernel
- CVSS v3.1
- 7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS
- %0,73 (yüzdelik 55)
- CWE
- CWE-125
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 5.10 | — | 5.10.217 |
| linux-linux-kernel | 5.11 | — | 5.15.159 |
| linux-linux-kernel | 5.16 | — | 6.1.91 |
| linux-linux-kernel | 6.2 | — | 6.6.31 |
| linux-linux-kernel | 6.7 | — | 6.8.10 |
| linux-linux-kernel | 6.9 | 6.9 | — |
| linux-linux-kernel | 6.9 | 6.9 | — |
| linux-linux-kernel | 6.9 | 6.9 | — |
| debian-debian-linux | 10.0 | 10.0 | — |