Answer in brief
CVE-2024-49960 records a High severity (CVSS 7.8) vulnerability in ext4: fix timer use-after-free on failed mount. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5e4f5138bd8522ebe231a137682d3857209a2c07 <7aac0c17a8cdf4a3236991c1e60435c6a984076c || >=618f003199c6188e01472b03cdbba227f1dc5f24 <22e9b83f0f33bc5a7a3181769d1dccbf021f5b04 || >=618f003199c6188e01472b03cdbba227f1dc5f24 <cf3196e5e2f36cd80dab91ffae402e13935724bc || >=618f003199c6188e01472b03cdbba227f1dc5f24 <9203817ba46ebba7c865c8de2aba399537b6e891 || >=618f003199c6188e01472b03cdbba227f1dc5f24 <fa78fb51d396f4f2f80f8e96a3b1516f394258be || >=618f003199c6188e01472b03cdbba227f1dc5f24 <b85569585d0154d4db1e4f9e3e6a4731d407feb0 || >=618f003199c6188e01472b03cdbba227f1dc5f24 <0ce160c5bdb67081a62293028dc85758a8efb22a || cecfdb9cf9a700d1037066173abac0617f6788df || eb7b40d9d3785f7a131fb0b1f89bb6efa46c1833 || >=5.10.51 <5.10.237 || >=5.12.18 <5.13 || >=5.13.3 <5.14 | 7aac0c17a8cdf4a3236991c1e60435c6a984076c, 22e9b83f0f33bc5a7a3181769d1dccbf021f5b04, cf3196e5e2f36cd80dab91ffae402e13935724bc, 9203817ba46ebba7c865c8de2aba399537b6e891, fa78fb51d396f4f2f80f8e96a3b1516f394258be, b85569585d0154d4db1e4f9e3e6a4731d407feb0, 0ce160c5bdb67081a62293028dc85758a8efb22a, 5.10.237, 5.13, 5.14 |
| Linux/Linuxgeneric | 5.14 | Not reported |
Published upstream
Oct 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.