CVE-2024-38586
CVE-2024-38586 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. 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-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (16th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-37449
- Weakness: CWE-787
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: r8169: Fix possible ring buffer corruption on fragmented Tx packets. An issue was found on the RTL8125b when transmitting small fragmented packets, whereby invalid entries were inserted into the transmit ring buffer, subsequently leading to calls to dma_unmap_single() with a null address. This was caused by rtl8169_start_xmit() not noticing changes to nr_frags which may occur when small packets are padded (to work around hardware quirks) in rtl8169_tso_csum_v2(). To fix this, postpone inspecting nr_frags until after any padding has been applied.
Frequently asked questions
- What is CVE-2024-38586?
- In the Linux kernel, the following vulnerability has been resolved: r8169: Fix possible ring buffer corruption on fragmented Tx packets. An issue was found on the RTL8125b when transmitting small fragmented packets, whereby invalid entries were inserted into the transmit ring buffer, subsequently leading to calls to dma_unmap_single() with a null address. This was caused by rtl8169_start_xmit() not noticing changes to nr_frags which may occur when small packets are padded (to work around hardware quirks) in rtl8169_tso_csum_v2(). To fix this, postpone inspecting nr_frags until after any padding has been applied.
- How severe is CVE-2024-38586?
- CVE-2024-38586 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-38586 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-38586?
- CVE-2024-38586 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-38586?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-38586 have an EU (EUVD) identifier?
- Yes. CVE-2024-38586 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37449.
- When was CVE-2024-38586 published?
- CVE-2024-38586 was published on 2024-06-19 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/078d5b7500d70af2de6b38e226b03f0b932026a6
- https://git.kernel.org/stable/c/0c48185a95309556725f818b82120bb74e9c627d
- https://git.kernel.org/stable/c/54e7a0d111240c92c0f02ceba6eb8f26bf6d6479
- https://git.kernel.org/stable/c/61c1c98e2607120ce9c3fa1bf75e6da909712b27
- https://git.kernel.org/stable/c/68222d7b4b72aa321135cd453dac37f00ec41fd1
- https://git.kernel.org/stable/c/b6d21cf40de103d63ae78551098a7c06af8c98dd
- https://git.kernel.org/stable/c/c71e3a5cffd5309d7f84444df03d5b72600cc417
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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