{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43500 exists.","fix":"Apply the vendor's patch.","what":"CVE-2026-43500 is a high-severity memory corruption vulnerability in Linux kernel, published on 11 May 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-43500 and fix it if it is affected.\n\nWhat it is: CVE-2026-43500 is a high-severity memory corruption vulnerability in Linux kernel, published on 11 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43500 exists.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-43500/ (Markdown: https://insights.sbomify.com/CVE-2026-43500/index.md)","id":"CVE-2026-43500","markdown":"https://insights.sbomify.com/CVE-2026-43500/index.md","name":"CVE-2026-43500","record":{"aliases":["AZL-86366","BELL-CVE-2026-43500","DEBIAN-CVE-2026-43500","GHSA-8p2w-g92w-f4x3","UBUNTU-CVE-2026-43500"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A flaw in the Linux kernel's rxrpc module allows memory corruption when processing packets with shared fragments, potentially enabling code execution or privilege escalation.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-123","name":"Write-what-where Condition"},{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Also unshare DATA/RESPONSE packets when paged frags are present\n\nThe DATA-packet handler in rxrpc_input_call_event() and the RESPONSE\nhandler in rxrpc_verify_response() copy the skb to a linear one before\ncalling into the security ops only when skb_cloned() is true.  An skb\nthat is not cloned but still carries externally-owned paged fragments\n(e.g. SKBFL_SHARED_FRAG set by splice() into a UDP socket via\n__ip_append_data, or a chained skb_has_frag_list()) falls through to\nthe in-place decryption path, which binds the frag pages directly into\nthe AEAD/skcipher SGL via skb_to_sgvec().\n\nExtend the gate to also unshare when skb_has_frag_list() or\nskb_has_shared_frag() is true.  This catches the splice-loopback vector\nand other externally-shared frag sources while preserving the\nzero-copy fast path for skbs whose frags are kernel-private (e.g. NIC\npage_pool RX, GRO).  The OOM/trace handling already in place is reused.","ecosystems":[],"exploits":{"exploitdb":2,"first_seen":"2026-04-30","github_poc":2,"max_poc_stars":0,"metasploit":1,"nuclei":0,"refs":[{"date":"2026-04-30T12:27:15Z","kind":"github_poc","ref":"https://github.com/attaattaatta/CVE-2026-43500","stars":0,"title":"CVE-2026-43500 / CVE-2026-31431 / CVE-2026-43284 golang hotfix"},{"date":"2026-05-08","kind":"metasploit","ref":"exploit/linux/local/cve_2026_43500_dirty_frag","stars":null,"title":"rxkad Page-Cache Write via CVE-2026-43500"},{"date":"2026-05-09T04:07:16Z","kind":"github_poc","ref":"https://github.com/vorkampfer/dirty_frag_mitigation","stars":0,"title":"A bash script for mitigating  linux dirtyfrag exploit CVE-2026-43500, and fragnesia"},{"date":"2026-05-27","kind":"exploitdb","ref":"52585","stars":null,"title":"Linux Kernel - Local Privilege Escalation"},{"date":"2026-05-29","kind":"exploitdb","ref":"52591","stars":null,"title":"Linux Kernel -  Local Privilege Escalation"}],"tier":"weaponised"},"has_fix":true,"headline":"rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present","id":"CVE-2026-43500","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"ipv6: rpl: reserve mac_len headroom when recompressed SRH grows","id":"CVE-2026-43501"},"packages":[],"prev":{"headline":"rtmutex: Use waiter::task instead of current in remove_waiter()","id":"CVE-2026-43499"},"products":["Linux"],"published":"2026-05-11","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-01","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's rxrpc module allows memory corruption when processing packets with shared fragments, potentially enabling code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-43500/"}