Vulnerability-Lookup

CVE-2023-53149 (GCVE-0-2023-53149)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:03 – Updated: 2026-05-11 19:39

Title

ext4: avoid deadlock in fs reclaim with page writeback

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid deadlock in fs reclaim with page writeback Ext4 has a filesystem wide lock protecting ext4_writepages() calls to avoid races with switching of journalled data flag or inode format. This lock can however cause a deadlock like: CPU0 CPU1 ext4_writepages() percpu_down_read(sbi->s_writepages_rwsem); ext4_change_inode_journal_flag() percpu_down_write(sbi->s_writepages_rwsem); - blocks, all readers block from now on ext4_do_writepages() ext4_init_io_end() kmem_cache_zalloc(io_end_cachep, GFP_KERNEL) fs_reclaim frees dentry... dentry_unlink_inode() iput() - last ref => iput_final() - inode dirty => write_inode_now()... ext4_writepages() tries to acquire sbi->s_writepages_rwsem and blocks forever Make sure we cannot recurse into filesystem reclaim from writeback code to avoid the deadlock.

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/2ec97dc90df40c50e…
https://git.kernel.org/stable/c/4b4340bf04ce9a520…
https://git.kernel.org/stable/c/00d873c17e29cc32d…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: c8585c6fcaf2011de54c3592e80a634a2b9e1a7f , < 2ec97dc90df40c50e509809dc9a198638a7e18b6 (git) Affected: c8585c6fcaf2011de54c3592e80a634a2b9e1a7f , < 4b4340bf04ce9a52061f15000ecedd126abc093c (git) Affected: c8585c6fcaf2011de54c3592e80a634a2b9e1a7f , < 00d873c17e29cc32d90ca852b82685f1673acaa5 (git)	guessed
Linux	Linux	Affected: 4.7 Unaffected: 0 , < 4.7 (semver) Unaffected: 6.2.16 , ≤ 6.2.* (semver) Unaffected: 6.3.3 , ≤ 6.3.* (semver) Unaffected: 6.4 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

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WID-SEC-W-2026-0349

Vulnerability from csaf_certbund - Published: 2026-02-09 23:00 - Updated: 2026-03-16 23:00

Summary

Dell Avamar und NetWorker: Mehrere Schwachstellen

Severity

Hoch

Scope

369 vulnerabilities in this advisory, including CVE-2023-53149.

CVE-2023-53149

Known affected: 21 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.