Unknown

CVE-2023-53820 — loop: loop_set_status_from_info() check before assignment

In the Linux kernel, the following vulnerability has been resolved: loop: loop_set_status_from_info() check before assignment In loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should be checked before reassignment, because if an overflow error occurs, the original correct value will be changed to the wrong value, and it will not be changed back. More, the original patch did not solve the problem, the value was set and ioctl returned an error, but the subsequent io used the value in the loop driver, which still caused an alarm: loop_handle_cmd do_req_filebacked loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset; lo_rw_aio cmd->iocb.ki_pos = pos

Published Dec 9, 2025 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.3% (30-day exploitation probability)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.28%

ahead of 19% of scored CVEs · Oct 14, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	version adf0112d9b8acb03485624220b4934f69bf13369version 6.0≥ 5.19.6 and < 5.20≥ 4.14.292 and < 4.15≥ 4.9.327 and < 4.10≥ 5.15.64 and < 5.15.100≥ 5.10.140 and < 5.10.173≥ 5.4.212 and < 5.4.274 and 12 more ≥ 4.19.257 and < 4.19.312version 9be7fa7ead18a48940df7b59d993bbc8b9055c15≥ 2035c770bfdbcc82bd52e05871a7c82db9529e0f and < 6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcbversion 18e28817cb516b39de6281f6db9b0618b2cc7b42≥ c490a0b5a4f36da3918181a8acdc6991d967c5f3 and < 9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa≥ c490a0b5a4f36da3918181a8acdc6991d967c5f3 and < 258809bf22bf71d53247856f374f2b1d055f2fd4≥ c490a0b5a4f36da3918181a8acdc6991d967c5f3 and < 4be26d553a3f1d4f54f25353d1496c562002126d≥ 0455bef69028c65065f16bb04635591b2374249b and < 3e7d0968203d668af6036b9f9199c7b62c8a3581≥ 6858933131d0dadac071c4d33335a9ea4b8e76cf and < c79a924ed6afac1708dfd370ba66bcf6a852ced6≥ b40877b8562c5720d0a7fce20729f56b75a3dede and < 861021710bba9dfa0749a3c209a6c1773208b1f1≥ 13b2856037a651ba3ab4a8b25ecab3e791926da3 and < 2ea7077748e5d7cc64f1c31342c802fe66ea7426≥ a217715338fd48f72114725aa7a40e484a781ca7 and < 832580af82ace363205039a8e7c4ef04552ccc1a	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.28%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 13, 2026
Affected products added · linux/linux
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
2025
CVE published
Dec 9, 2025 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

9 on the record

git.kernel.org/stable/c/832580af82ace363205039a8e7c4ef04552ccc1a
NIST National Vulnerability Database
git.kernel.org/stable/c/258809bf22bf71d53247856f374f2b1d055f2fd4
NIST National Vulnerability Database
git.kernel.org/stable/c/4be26d553a3f1d4f54f25353d1496c562002126d
NIST National Vulnerability Database
git.kernel.org/stable/c/c79a924ed6afac1708dfd370ba66bcf6a852ced6
NIST National Vulnerability Database
git.kernel.org/stable/c/2ea7077748e5d7cc64f1c31342c802fe66ea7426
NIST National Vulnerability Database
git.kernel.org/stable/c/9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa
NIST National Vulnerability Database
git.kernel.org/stable/c/3e7d0968203d668af6036b9f9199c7b62c8a3581
NIST National Vulnerability Database
git.kernel.org/stable/c/6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcb
NIST National Vulnerability Database
git.kernel.org/stable/c/861021710bba9dfa0749a3c209a6c1773208b1f1
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 8h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 8h
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2023-53820 is "loop: loop_set_status_from_info() check before assignment", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.28% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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