mtdchar: fix integer overflow in read/write ioctls
In the Linux kernel, the following vulnerability has been resolved:
mtdchar: fix integer overflow in read/write ioctls
The "req.start" and "req.len" variables are u64 values that come from the
user at the start of the function. We mask away the high 32 bits of
"req.len" so that's capped at U32_MAX but the "req.start" variable can go
up to U64_MAX which means that the addition can still integer overflow.
Use check_add_overflow() to fix this bug.
CVE 정보
EPSS
EPSS는 취약점이 악용될 가능성을 예측하는 점수 모델입니다.
EPSS 점수
EPSS 모델은 0과 1(0~100%) 사이의 확률 점수를 생성합니다. 점수가 높을수록 취약점이 악용될 가능성이 높습니다.
날짜
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2025-12-17
–
–
–
–
0.02%
2025-12-22
–
–
–
–
0.02%
2026-01-17
–
–
–
–
0.03%
2026-01-18
–
–
–
–
0.05%
2026-02-22
–
–
–
–
0.04%
2026-03-08
–
–
–
–
0.04%
2026-03-15
–
–
–
–
0.04%
2026-03-22
–
–
–
–
0.04%
2026-04-26
–
–
–
–
0.05%
2026-05-17
–
–
–
–
0.03%
2026-05-31
–
–
–
–
0.04%
2026-06-14
–
–
–
–
0.04%
EPSS 백분위수
백분위수는 EPSS 점수에 따라 CVE의 순위를 매기는 데 사용됩니다. 예를 들어 EPSS 점수 기준 95번째 백분위수의 CVE는 다른 CVE의 95%보다 악용될 가능성이 높습니다.