CVE-2024-43828ext4: fix infinite loop when replaying fast_commit
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fast_commit When doing fast_commit replay an infinite loop may occur due to an uninitialized extent_status struct. ext4_ext_determine_insert_hole() does not detect the replay and calls ext4_es_find_extent_range(), which will return immediately without initializing the 'es' variable. Because 'es' contains garbage, an integer overflow may happen causing an infinite loop in this function, easily reproducible using fstest generic/039. This commit fixes this issue by unconditionally initializing the structure in function ext4_es_find_extent_range(). Thanks to Zhang Yi, for figuring out the real problem!
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 builds before 5ed0496e383cb6de120e56991385dce70bbb87c1; 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 builds before 0619f7750f2b178a1309808832ab20d85e0ad121; 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 builds before 181e63cd595c688194e07332f9944b3a63193de2; from 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 before c6e67df64783e99a657ef2b8c834ba2bf54c539c; 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 builds before 81f819c537d29932e4b9267f02411cbc8b355178; 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 builds before 907c3fe532253a6ef4eb9c4d67efb71fab58c706 | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.10 before 5.10.224; from 5.11 before 5.15.165; from 5.16 before 6.1.103; from 6.2 before 6.6.44; from 6.7 before 6.10.3 | NVD |
References
- https://git.kernel.org/stable/c/5ed0496e383cb6de120e56991385dce70bbb87c1patch
- https://git.kernel.org/stable/c/0619f7750f2b178a1309808832ab20d85e0ad121patch
- https://git.kernel.org/stable/c/181e63cd595c688194e07332f9944b3a63193de2patch
- https://git.kernel.org/stable/c/c6e67df64783e99a657ef2b8c834ba2bf54c539cpatch
- https://git.kernel.org/stable/c/81f819c537d29932e4b9267f02411cbc8b355178patch
- https://git.kernel.org/stable/c/907c3fe532253a6ef4eb9c4d67efb71fab58c706patch
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.