원문 설명
In the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skb_try_coalesce() can attach paged frags from @from to @to. If @from has SKBFL_SHARED_FRAG set, the resulting @to skb can contain the same externally-owned or page-cache-backed frags, but the shared-frag marker is currently lost. That breaks the invariant relied on by later in-place writers. In particular, ESP input checks skb_has_shared_frag() before deciding whether an uncloned nonlinear skb can skip skb_cow_data(). If TCP receive coalescing has moved shared frags into an unmarked skb, ESP can see skb_has_shared_frag() as false and decrypt in place over page-cache backed frags. Propagate SKBFL_SHARED_FRAG when skb_try_coalesce() transfers paged frags. The tailroom copy path does not need the marker because it copies bytes into @to's linear data rather than transferring frag descriptors.
실제 악용 확인(CISA KEV)
- KEV 등재일
- 2026-10-28
- 조치 기한(미 연방기관)
- 2026-10-31
- 랜섬웨어 사용
- Unknown
- 요구 조치
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
상세
- 공개일
- 2026-05-23
- 최종 수정
- 2026-10-29
- CVSS 벡터
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- EPSS(30일 내 악용 확률)
- 16.13% (백분위 97)
참고 자료
- cve.org/CVE-2026-46300
- nvd.nist.gov/vuln/detail/CVE-2026-46300
- git.kernel.org/stable/c/3599e6b3cc1ada96883d496a50a210d3afbb6987
- git.kernel.org/stable/c/2f2b16022a2e10ca7bccfb98db5ed2ec0f72641c
- git.kernel.org/stable/c/9d3e5fd19fe1063bf607219e8562fbd567b8e8d5
- git.kernel.org/stable/c/78bf6b6bb19541d19fbda6242e7cfe2c682763c0
- git.kernel.org/stable/c/760e1addc27ba1a7beb4a0a7e8b3e9ec49e7a34e
- git.kernel.org/stable/c/3bd9e113d50034db99d7ef69fd8e5242d15e414a
- git.kernel.org/stable/c/3884358a9286b17f389a72b1426fc4547c23c111
- git.kernel.org/stable/c/f84eca5817390257cef78013d0112481c503b4a3
내 서버의 버전을 직접 추적하세요
InfraGuard 는 모든 서버에 설치된 소프트웨어 버전을 수집하고, 알려진 취약점이 있는 버전을 알려 줍니다. 자체 호스팅이라 데이터가 내 네트워크를 벗어나지 않습니다.
이 제품은 NVD API 데이터를 사용하지만 NVD 의 보증이나 인증을 받은 것은 아닙니다. CVE® 는 The MITRE Corporation 의 등록 상표이며, CVE 레코드는 CVE Program 이용 약관에 따라 사용합니다.