security: add SSB-2026-002 (Dirty Frag / Fragnesia)#3750
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yanjost merged 2 commits intoMay 13, 2026
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Add security bulletin SSB-2026-002 covering: - Dirty Frag (CVE-2026-43284 and CVE-2026-43500): Linux kernel LPE via page cache write primitives in xfrm-ESP and RxRPC subsystems, publicly disclosed May 7th 2026. - Fragnesia: related LPE in the same XFRM ESP-in-TCP subsystem, publicly disclosed May 13th 2026. Mitigation: esp4, esp6, rxrpc kernel modules disabled across all hosting nodes on May 8th at 10:02, covering both vulnerabilities. Exploit path is additionally blocked by Docker's default seccomp profile which prevents CLONE_NEWUSER in containers without CAP_SYS_ADMIN. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
leo-scalingo
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May 13, 2026
Co-authored-by: Léo Unbekandt <159253935+leo-scalingo@users.noreply.github.com>
yanjost
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feat/SECINC-157/SECINC-158/dirty-frag-fragnesia-ssb-2026-002
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Security Bulletin SSB-2026-002
This PR adds the security bulletin for the Dirty Frag and Fragnesia Linux kernel local privilege escalation vulnerabilities.
Vulnerabilities covered
xfrm-ESPandRxRPCkernel subsystems exploiting the shared page cache.Scalingo response
esp4,esp6,rxrpcmodules disabled across all hosting nodes by 10:02, covering both vulnerabilities.CLONE_NEWUSERin containers withoutCAP_SYS_ADMIN.References