CVE-2024-49960 (GCVE-0-2024-49960)
Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-08-05 11:40
VLAI
EPSS
VEX
Title
ext4: fix timer use-after-free on failed mount
Summary
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix timer use-after-free on failed mount
Syzbot has found an ODEBUG bug in ext4_fill_super
The del_timer_sync function cancels the s_err_report timer,
which reminds about filesystem errors daily. We should
guarantee the timer is no longer active before kfree(sbi).
When filesystem mounting fails, the flow goes to failed_mount3,
where an error occurs when ext4_stop_mmpd is called, causing
a read I/O failure. This triggers the ext4_handle_error function
that ultimately re-arms the timer,
leaving the s_err_report timer active before kfree(sbi) is called.
Fix the issue by canceling the s_err_report timer after calling ext4_stop_mmpd.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:35 UTC
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
5e4f5138bd8522ebe231a137682d3857209a2c07 , < 7aac0c17a8cdf4a3236991c1e60435c6a984076c
(git)
Affected: 618f003199c6188e01472b03cdbba227f1dc5f24 , < 22e9b83f0f33bc5a7a3181769d1dccbf021f5b04 (git) Affected: 618f003199c6188e01472b03cdbba227f1dc5f24 , < cf3196e5e2f36cd80dab91ffae402e13935724bc (git) Affected: 618f003199c6188e01472b03cdbba227f1dc5f24 , < 9203817ba46ebba7c865c8de2aba399537b6e891 (git) Affected: 618f003199c6188e01472b03cdbba227f1dc5f24 , < fa78fb51d396f4f2f80f8e96a3b1516f394258be (git) Affected: 618f003199c6188e01472b03cdbba227f1dc5f24 , < b85569585d0154d4db1e4f9e3e6a4731d407feb0 (git) Affected: 618f003199c6188e01472b03cdbba227f1dc5f24 , < 0ce160c5bdb67081a62293028dc85758a8efb22a (git) Affected: cecfdb9cf9a700d1037066173abac0617f6788df (git) Affected: eb7b40d9d3785f7a131fb0b1f89bb6efa46c1833 (git) Affected: 5.10.51 , < 5.10.237 (semver) Affected: 5.12.18 , < 5.13 (semver) Affected: 5.13.3 , < 5.14 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.14
Unaffected: 0 , < 5.14 (semver) Unaffected: 5.10.237 , ≤ 5.10.* (semver) Unaffected: 5.15.181 , ≤ 5.15.* (semver) Unaffected: 6.1.118 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
guessed |
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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