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CVE-2024-35821

MEDIUMCVSS 5.5/10EPSS 0.57%

Last modified

CVE-2024-35821 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: ubifs: Set page uptodate in the correct place Page cache reads are lockless, so setting the freshly allocated page uptodate before we've overwritten it with the data it's supposed to have in it will allow a simultaneous reader to see old data. Move the call to SetPageUptodate into ubifs_write_end(), which is after we copied the new data into the page.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: ubifs: Set page uptodate in the correct place Page cache reads are lockless, so setting the freshly allocated page uptodate before we've overwritten it with the data it's supposed to have in it will allow a simultaneous reader to see old data. Move the call to SetPageUptodate into ubifs_write_end(), which is after we copied the new data into the page.

Metrics

CVSS 3.1
5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.57%

42.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
DebianDebian Linux10.0
LinuxLinux Kernel>= 2.6.27, < 4.19.312
LinuxLinux Kernel>= 4.20, < 5.4.274
LinuxLinux Kernel>= 5.5, < 5.10.215
LinuxLinux Kernel>= 5.11, < 5.15.154
LinuxLinux Kernel>= 5.16, < 6.1.84
LinuxLinux Kernel>= 6.2, < 6.6.24
LinuxLinux Kernel>= 6.7, < 6.7.12
LinuxLinux Kernel>= 6.8, < 6.8.3

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-35821?
In the Linux kernel, the following vulnerability has been resolved: ubifs: Set page uptodate in the correct place Page cache reads are lockless, so setting the freshly allocated page uptodate before we've overwritten it with the data it's supposed to have in it will allow a simultaneous reader to see old data. Move the call to SetPageUptodate into ubifs_write_end(), which is after we copied the new data into the page.
How severe is CVE-2024-35821?
CVE-2024-35821 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.
How do I fix CVE-2024-35821?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-35821?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST