5.5

CVE-2023-53151: linux Improper Locking

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2023-53151DEBIAN-CVE-2023-53151
Published 15-09-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-53151 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 17 · Related 15
RHSA-2024:2394RHSA-2024:3138SUSE-SU-2025:03600-1SUSE-SU-2025:03614-1SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1

Timeline

  1. 15-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid10: prevent soft lockup while flush writes Currently, there is no limit for raid1/raid10 plugged bio. While flushing writes, raid1 has cond_resched() while raid10 doesn't, and too many writes can cause soft lockup. Follow up soft lockup can be triggered easily with writeback test for raid10 with ramdisks: watchdog: BUG: soft lockup - CPU#10 stuck for 27s! [md0_raid10:1293] Call Trace: <TASK> call_rcu+0x16/0x20 put_object+0x41/0x80 __delete_object+0x50/0x90 delete_object_full+0x2b/0x40 kmemleak_free+0x46/0xa0 slab_free_freelist_hook.constprop.0+0xed/0x1a0 kmem_cache_free+0xfd/0x300 mempool_free_slab+0x1f/0x30 mempool_free+0x3a/0x100 bio_free+0x59/0x80 bio_put+0xcf/0x2c0 free_r10bio+0xbf/0xf0 raid_end_bio_io+0x78/0xb0 one_write_done+0x8a/0xa0 raid10_end_write_request+0x1b4/0x430 bio_endio+0x175/0x320 brd_submit_bio+0x3b9/0x9b7 [brd] __submit_bio+0x69/0xe0 submit_bio_noacct_nocheck+0x1e6/0x5a0 submit_bio_noacct+0x38c/0x7e0 flush_pending_writes+0xf0/0x240 raid10d+0xac/0x1ed0 Fix the problem by adding cond_resched() to raid10 like what raid1 did. Note that unlimited plugged bio still need to be optimized, for example, in the case of lots of dirty pages writeback, this will take lots of memory and io will spend a long time in plug, hence io latency is bad.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu124 products
  • linuxAll versions (No fix recorded) | < 5.4.0-166.183 | < 5.15.0-112.122
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1113.123 | < 5.15.0-1063.69
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < f45b2fa7678ab385299de345f7e85d05caea386b | ≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < 00ecb6fa67c0f772290c5ea5ae8b46eefd503b83 | ≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < d0345f7c7dbc5d42e4e6f1db99c1c1879d7b0eb5 | ≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < 634daf6b2c81015cc5e28bf694a6a94a50c641cd | ≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < 84a578961b2566e475bfa8740beaf0abcc781a6f | ≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < 1d467e10507167eb6dc2c281a87675b731955d86 | ≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < fbf50184190d55f8717bd29aa9530c399be96f30 | ≥ 6cce3b23f6f8e974c00af7a9b88f1d413ba368a8, < 010444623e7f4da6b4a4dd603a7da7469981e293 | 2.6.16
  • linux_kernel< 4.14.322 | ≥ 4.15, < 4.19.291 | ≥ 4.20, < 5.4.251 | ≥ 5.5, < 5.10.188 | ≥ 5.11, < 5.15.150 | ≥ 5.16, < 6.1.83 | ≥ 6.2, < 6.4.7
Debian1 product
  • linux< 6.1.85-1 | < 6.4.11-1

3 vendors · 127 products

References

12 links
Show all 12 references