Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2023-53151 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

md/raid10: prevent soft lockup while flush writes

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2023-53151 is recorded against 2 packages.

  • kernel (from 6.2.0 up to 6.4.7)
  • linux-kernel (from 6.2 up to 6.4.7)

Timeline and source

Published on 15 September 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-53151 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-09-15
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.2.0 6.4.7
linux-kernel 6.2 6.4.7

References

Similar Threats

Vulnerability Monitoring

Track new vulnerabilities in kernel

CVE-2023-53151 is rated CVSS 5.5 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.

Set Up Free Alerts →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2023
✓