CVE-2024-35987
CVE-2024-35987 is a medium-severity vulnerability in Linux Linux Kernel 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.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (11th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-35705
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: riscv: Fix loading 64-bit NOMMU kernels past the start of RAM commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") added logic to allow using RAM below the kernel load address. However, this does not work for NOMMU, where PAGE_OFFSET is fixed to the kernel load address. Since that range of memory corresponds to PFNs below ARCH_PFN_OFFSET, mm initialization runs off the beginning of mem_map and corrupts adjacent kernel memory. Fix this by restoring the previous behavior for NOMMU kernels.
Frequently asked questions
- What is CVE-2024-35987?
- In the Linux kernel, the following vulnerability has been resolved: riscv: Fix loading 64-bit NOMMU kernels past the start of RAM commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") added logic to allow using RAM below the kernel load address. However, this does not work for NOMMU, where PAGE_OFFSET is fixed to the kernel load address. Since that range of memory corresponds to PFNs below ARCH_PFN_OFFSET, mm initialization runs off the beginning of mem_map and corrupts adjacent kernel memory. Fix this by restoring the previous behavior for NOMMU kernels.
- How severe is CVE-2024-35987?
- CVE-2024-35987 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-2024-35987 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-35987?
- CVE-2024-35987 primarily affects Linux Linux Kernel. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2024-35987?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2024-35987 have an EU (EUVD) identifier?
- Yes. CVE-2024-35987 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-35705.
- When was CVE-2024-35987 published?
- CVE-2024-35987 was published on 2024-05-20 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/aea702dde7e9876fb00571a2602f25130847bf0f
- https://git.kernel.org/stable/c/b008e327fa570aca210f98c817757649bae56694
- https://git.kernel.org/stable/c/ea6628e4e2353978af7e3b4ad4fdaab6149acf3d
Affected products (6)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*
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