CVE-2024-35821
CVE-2024-35821 is a medium-severity vulnerability in Debian Debian Linux with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-772.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 1% (43rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-35738
- Weakness: CWE-772
- Affected product: Debian Debian Linux
- Published:
- Last modified:
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.
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 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2024-35821 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-35821?
- CVE-2024-35821 primarily affects Debian Debian Linux. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2024-35821?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2024-35821 have an EU (EUVD) identifier?
- Yes. CVE-2024-35821 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-35738.
- When was CVE-2024-35821 published?
- CVE-2024-35821 was published on 2024-05-17 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/142d87c958d9454c3cffa625fab56f3016e8f9f3
- https://git.kernel.org/stable/c/17772bbe9cfa972ea1ff827319f6e1340de76566
- https://git.kernel.org/stable/c/4aa554832b9dc9e66249df75b8f447d87853e12e
- https://git.kernel.org/stable/c/4b7c4fc60d6a46350fbe54f5dc937aeaa02e675e
- https://git.kernel.org/stable/c/723012cab779eee8228376754e22c6594229bf8f
- https://git.kernel.org/stable/c/778c6ad40256f1c03244fc06d7cdf71f6b5e7310
- https://git.kernel.org/stable/c/8f599ab6fabbca4c741107eade70722a98adfd9f
- https://git.kernel.org/stable/c/f19b1023a3758f40791ec166038d6411c8894ae3
- https://git.kernel.org/stable/c/fc99f4e2d2f1ce766c14e98463c2839194ae964f
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Affected products (2)
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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