Medium 5.5Published Jan 8, 2025

CVE-2024-56780quota: flush quota_release_work upon quota writeback

Updated under an hour ago (Oct 27, 2026, 7:50 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: quota: flush quota_release_work upon quota writeback One of the paths quota writeback is called from is: freeze_super() sync_filesystem() ext4_sync_fs() dquot_writeback_dquots() Since we currently don't always flush the quota_release_work queue in this path, we can end up with the following race: 1. dquot are added to releasing_dquots list during regular operations. 2. FS Freeze starts, however, this does not flush the quota_release_work queue. 3. Freeze completes. 4. Kernel eventually tries to flush the workqueue while FS is frozen which hits a WARN_ON since transaction gets started during frozen state: ext4_journal_check_start+0x28/0x110 [ext4] (unreliable) __ext4_journal_start_sb+0x64/0x1c0 [ext4] ext4_release_dquot+0x90/0x1d0 [ext4] quota_release_workfn+0x43c/0x4d0 Which is the following line: WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE); Which ultimately results in generic/390 failing due to dmesg noise. This was detected on powerpc machine 15 cores. To avoid this, make sure to flush the workqueue during dquot_writeback_dquots() so we dont have any pending workitems after freeze.

CVSS: 5.5 MEDIUM (v3.1, CISA ADP)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 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d40c192e119892799dd4ddf94f5cea6fa93775ef before a5abba5e0e586e258ded3e798fe5f69c66fec198; 86d89987f0998c98f57d641e308b40452a994045 builds before 6f3821acd7c3143145999248087de5fb4b48cf26; from 89602de9a2d7080b7a4029d5c1bf8f78d295ff5f before ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb; 3027e200dd58d5b437f16634dbbd355b29ffe0a6 builds before 3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb; from dabc8b20756601b9e1cc85a81d47d3f98ed4d13a before bcacb52a985f1b6d280f698a470b873dfe52728a; from dabc8b20756601b9e1cc85a81d47d3f98ed4d13a before 8ea87e34792258825d290f4dc5216276e91cb224; from dabc8b20756601b9e1cc85a81d47d3f98ed4d13a before ac6f420291b3fee1113f21d612fa88b628afab5b; f3e9a2bbdeb8987508dd6bb2b701dea911d4daec; and 9 more ranges	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.2	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.19.295 before 4.20; from 5.4.257 before 5.4.287; from 5.10.195 before 5.10.231; from 5.15.132 before 5.15.174; from 6.1.53 before 6.1.120; from 6.4.16 before 6.5; from 6.5.3 before 6.6.64; from 6.7 before 6.12.4; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/a5abba5e0e586e258ded3e798fe5f69c66fec198	patch
https://git.kernel.org/stable/c/6f3821acd7c3143145999248087de5fb4b48cf26	patch
https://git.kernel.org/stable/c/ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb	patch
https://git.kernel.org/stable/c/3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb	patch
https://git.kernel.org/stable/c/bcacb52a985f1b6d280f698a470b873dfe52728a	patch
https://git.kernel.org/stable/c/8ea87e34792258825d290f4dc5216276e91cb224	patch
https://git.kernel.org/stable/c/ac6f420291b3fee1113f21d612fa88b628afab5b	patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
https://cert-portal.siemens.com/productcert/html/ssa-355557.html
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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.