CVE-2026-46000
CVE-2026-46000 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% (5th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-32296
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix conn-level packet handling to unshare RESPONSE packets The security operations that verify the RESPONSE packets decrypt bits of it in place - however, the sk_buff may be shared with a packet sniffer, which would lead to the sniffer seeing an apparently corrupt packet (actually decrypted). Fix this by handing a copy of the packet off to the specific security handler if the packet was cloned.
Frequently asked questions
- What is CVE-2026-46000?
- In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix conn-level packet handling to unshare RESPONSE packets The security operations that verify the RESPONSE packets decrypt bits of it in place - however, the sk_buff may be shared with a packet sniffer, which would lead to the sniffer seeing an apparently corrupt packet (actually decrypted). Fix this by handing a copy of the packet off to the specific security handler if the packet was cloned.
- How severe is CVE-2026-46000?
- CVE-2026-46000 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-2026-46000 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-46000?
- CVE-2026-46000 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-46000?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-46000 have an EU (EUVD) identifier?
- Yes. CVE-2026-46000 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32296.
- When was CVE-2026-46000 published?
- CVE-2026-46000 was published on 2026-05-27 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/24481a7f573305706054c59e275371f8d0fe919f
- https://git.kernel.org/stable/c/98a2046d155f73f6cf5d2c493c5e09b4963e2e12
- https://git.kernel.org/stable/c/c0428a22daf69714dc042b67ea759956b74c74e5
- https://git.kernel.org/stable/c/ca71ac2de389b01eecdc48bfafbdf073ec232044
- https://git.kernel.org/stable/c/d9b93a0f57ca5f6831bfaa34014b6cd705564a00
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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