sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC
In the Linux kernel, the following vulnerability has been resolved:
sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC
The referenced commit introduced exception handlers on user-space memory
references in copy_from_user and copy_to_user. These handlers return from
the respective function and calculate the remaining bytes left to copy
using the current register contents. This commit fixes a couple of bad
calculations. This will fix the return value of copy_from_user and
copy_to_user in the faulting case. The behaviour of memcpy stays unchanged.
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)
2025-11-12
–
–
–
–
0.03%
2025-11-18
–
–
–
–
0.04%
2025-11-21
–
–
–
–
0.04%
2025-11-26
–
–
–
–
0.08%
2025-12-14
–
–
–
–
0.08%
2026-01-06
–
–
–
–
0.07%
2026-01-19
–
–
–
–
0.07%
2026-03-08
–
–
–
–
0.07%
2026-03-15
–
–
–
–
0.09%
2026-04-12
–
–
–
–
0.06%
2026-04-26
–
–
–
–
0.08%
2026-06-14
–
–
–
–
0.09%
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.