{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-97964 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-97964 is a memory corruption vulnerability in Linux, published on 25 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-97964 and fix it if it is affected.\n\nWhat it is: CVE-2026-97964 is a memory corruption vulnerability in Linux, published on 25 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-97964 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2026-97964/ (Markdown: https://insights.sbomify.com/CVE-2026-97964/index.md)","id":"CVE-2026-97964","markdown":"https://insights.sbomify.com/CVE-2026-97964/index.md","name":"CVE-2026-97964","record":{"aliases":["AZL-104238","BELL-CVE-2026-97964","DEBIAN-CVE-2026-97964","GHSA-59xx-49mr-rmvq","UBUNTU-CVE-2026-97964"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_modify","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel PPP","requires_auth":"none","summary":"A missing writable header check in the Linux kernel PPP sync tty driver allows remote attackers to corrupt shared memory buffers via crafted PPPoE frames.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nppp_synctty: ensure a writeable skb header\n\nppp_sync_txmunge() checks headroom before prepending the address and\ncontrol bytes, but does not ensure that the skb header is writable.\nA received skb can reach this function through PPP channel bridging\nwithout passing through ppp_start_xmit(), which calls skb_cow_head().\n\nFor example, a PPPoE frame may share its buffer with a clone queued to\nan AF_PACKET socket. If it is bridged to a synchronous tty channel, the\naddress/control bytes can overwrite data still visible to that socket.\n\nUse skb_cow_head() to ensure both sufficient headroom and a writable\nheader.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"ppp_synctty: ensure a writeable skb header","id":"CVE-2026-97964","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":7,"next":{"headline":"vxlan: initialize _md in vxlan_xmit_one()","id":"CVE-2026-97965"},"packages":[],"prev":{"headline":"net: stmmac: initialize ptp_lock at probe time","id":"CVE-2026-97963"},"products":["Linux"],"published":"2026-09-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A missing writable header check in the Linux kernel PPP sync tty driver allows remote attackers to corrupt shared memory buffers via crafted PPPoE frames.","url":"https://insights.sbomify.com/CVE-2026-97964/"}