CVE-2024-26860: dm-integrity: fix a memory leak when rechecking the data
First published: Wed Apr 17 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: dm-integrity: fix a memory leak when rechecking the data Memory for the "checksums" pointer will leak if the data is rechecked after checksum failure (because the associated kfree won't happen due to 'goto skip_io'). Fix this by freeing the checksums memory before recheck, and just use the "checksum_onstack" memory for storing checksum during recheck.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.1.80<6.1.83 | |
| Linux Kernel | >=6.6.19<6.6.23 | |
| Linux Kernel | >=6.7.7<6.7.11 | |
| Linux Kernel | >=6.8<6.8.2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/20e21c3c0195d915f33bc7321ee6b362177bf5bf
- https://git.kernel.org/stable/c/338580a7fb9b0930bb38098007e89cc0fc496bf7
- https://git.kernel.org/stable/c/55e565c42dce81a4e49c13262d5bc4eb4c2e588a
- https://git.kernel.org/stable/c/6d35654f03c35c273240d85ec67e3f2c3596c4e0
- https://git.kernel.org/stable/c/74abc2fe09691f3d836d8a54d599ca71f1e4287b
- https://launchpad.net/bugs/cve/CVE-2024-26860
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26860
- https://nvd.nist.gov/vuln/detail/CVE-2024-26860
- https://security-tracker.debian.org/tracker/CVE-2024-26860
- https://ubuntu.com/security/CVE-2024-26860
- https://git.kernel.org/linus/55e565c42dce81a4e49c13262d5bc4eb4c2e588a
Frequently Asked Questions
What is the severity of CVE-2024-26860?
CVE-2024-26860 has a moderate severity level due to a memory leak issue that can affect system performance.
How do I fix CVE-2024-26860?
To fix CVE-2024-26860, update to a patched version of the Linux kernel, such as 5.10.223-1 or 6.1.123-1.
Which versions of the Linux kernel are affected by CVE-2024-26860?
CVE-2024-26860 affects Linux kernel versions between 6.1.80 and 6.1.83, 6.6.19 and 6.6.23, 6.7.7 and 6.7.11, and 6.8 and 6.8.2.
Is CVE-2024-26860 related to data integrity?
Yes, CVE-2024-26860 is related to the integrity of data due to a memory leak occurring during checksum rechecking.
What impact does CVE-2024-26860 have on Linux systems?
CVE-2024-26860 can lead to increased memory usage over time, potentially degrading the performance of Linux systems.
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