CVE-2026-45953

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-05-27 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix IO hang with degraded array with llbitmap When llbitmap bit state is still unwritten, any new write should force rcw, as bitmap_ops->blocks_synced() is checked in handle_stripe_dirtying(). However, later the same check is missing in need_this_block(), causing stripe to deadloop during handling because handle_stripe() will decide to go to handle_stripe_fill(), meanwhile need_this_block() always return 0 and nothing is handled.

Affected Software (5)

VendorProductVersion
Linux Linux 5ab829f1971dc99f2aac10846c378e67fc875abc < 870b9f15867b0e70f3459ef3974b043e8b229690
Linux Linux 5ab829f1971dc99f2aac10846c378e67fc875abc < 28ef299e7a5b81817f8ca8297c2ddff28f5da5e8
Linux Linux 5ab829f1971dc99f2aac10846c378e67fc875abc < cd1635d844d26471c56c0a432abdee12fc9ad735
Linux Linux 6.18
linux linux_kernel 6.18 – 6.18.14

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.12%
Raw Score 0.001210
Percentile 1.9%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00121
2026-11-12
0.00121
2026-11-10
0.00121
2026-11-09
0.00121
2026-11-08
0.00121
2026-11-07
0.00121
2026-11-06
0.00121

Intelligence Sources

mitre ref →
nvd ref →