Description
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix i_data_sem unlock order in ext4_ind_migrate()
Fuzzing reports a possible deadlock in jbd2_log_wait_commit.
This issue is triggered when an EXT4_IOC_MIGRATE ioctl is set to require synchronous updates because the file descriptor is opened with O_SYNC. This can lead to the jbd2_journal_stop() function calling jbd2_might_wait_for_commit(), potentially causing a deadlock if the EXT4_IOC_MIGRATE call races with a write(2) system call.
This problem only arises when CONFIG_PROVE_LOCKING is enabled. In this case, the jbd2_might_wait_for_commit macro locks jbd2_handle in the jbd2_journal_stop function while i_data_sem is locked. This triggers lockdep because the jbd2_journal_start function might also lock the same jbd2_handle simultaneously.
Found by Linux Verification Center (linuxtesting.org) with syzkaller.
Rule: add
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < 4192adefc9c570698821c5eb9873320eac2fcbf1; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < 3c46d6060d3e38de22196c1fe7706c5a3c696285; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < 53b1999cfd2c7addf2e581a32865fe8835467b44; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < ef05572da0c0eb89614ed01cc17d3c882bdbd1ff; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < 9fedf51ab8cf7b69bff08f37fe0989fec7f5d870; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < d43776b907659affef1de888525847d64b244194; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < 6252cb6bde7fc76cb8dcb49d1def7c326b190820; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < d58a00e981d3118b91d503da263e640b7cde6729; >= e8238f9a8339b3578c85e4192a7a23bc2bdc0333, < cc749e61c011c255d81b192a822db650c68b313f |
| Linux | Linux | 3.10 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < V1.1.1 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | RUGGEDCOM RST2428P | < V3.2 |
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family | < V3.2 |
| Siemens | SCALANCE XCM-/XRM-/XCH-/XRH-300 family | < V3.2 |
References
- https://git.kernel.org/stable/c/3c46d6060d3e38de22196c1fe7706c5a3c696285
- https://git.kernel.org/stable/c/4192adefc9c570698821c5eb9873320eac2fcbf1
- https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44Patch
- https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820Patch
- https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870Patch
- https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313fPatch
- https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194Patch
- https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729Patch
- https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ffPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
Timeline
- Published
- Oct 21, 2024
- Last modified
- Oct 15, 2026
- NVD status
- Modified