{"answers":{"affected":"It affects 8 products.","exploited":"Yes. Attackers have exploited CVE-2026-46300 in the wild since at least 28 Oct 2026.","fix":"Apply the vendor's patch. US federal agencies must fix it by 31 Oct 2026.","what":"CVE-2026-46300 is a high-severity memory corruption vulnerability in Linux kernel, published on 23 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-2026-46300 and fix it if it is affected.\n\nWhat it is: CVE-2026-46300 is a high-severity memory corruption vulnerability in Linux kernel, published on 23 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2026-46300 in the wild since at least 28 Oct 2026.\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-2026-46300/ (Markdown: https://insights.sbomify.com/CVE-2026-46300/index.md)","id":"CVE-2026-46300","markdown":"https://insights.sbomify.com/CVE-2026-46300/index.md","name":"CVE-2026-46300","record":{"aliases":["AZL-87351","BELL-CVE-2026-46300","CLSA-2026-1778783204","CLSA-2026-1778783464","CLSA-2026-1778832730","CLSA-2026-1778832754","CLSA-2026-1778839666","CLSA-2026-1778863931","CLSA-2026-1778867412","CLSA-2026-1778930898","DEBIAN-CVE-2026-46300","GHSA-47jg-vqrv-5f8v","RHBA-2026:20032","ROOT-OS-DEBIAN-11-CVE-2026-46300","ROOT-OS-DEBIAN-12-CVE-2026-46300","ROOT-OS-DEBIAN-13-CVE-2026-46300","UBUNTU-CVE-2026-46300"],"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 missing shared-frag marker in Linux kernel TCP coalescing allows ESP to decrypt in-place over page-cache backed fragments, potentially leading to memory corruption.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_linux_aus","vendor":"redhat"},{"product":"enterprise_linux_eus","vendor":"redhat"},{"product":"enterprise_linux_tus","vendor":"redhat"},{"product":"enterprise_linux_update_services_for_sap_solutions","vendor":"redhat"},{"product":"openshift_container_platform","vendor":"redhat"},{"product":"simatic_s7-1500_cpu_1518-4_pn\\/dp_mfp_firmware","vendor":"siemens"}],"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-787","name":"Out-of-bounds Write"},{"id":"CWE-123","name":"Write-what-where Condition"},{"id":"CWE-456","name":"Missing Initialization of a Variable"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: skbuff: preserve shared-frag marker during coalescing\n\nskb_try_coalesce() can attach paged frags from @from to @to.  If @from\nhas SKBFL_SHARED_FRAG set, the resulting @to skb can contain the same\nexternally-owned or page-cache-backed frags, but the shared-frag marker\nis currently lost.\n\nThat breaks the invariant relied on by later in-place writers.  In\nparticular, ESP input checks skb_has_shared_frag() before deciding\nwhether an uncloned nonlinear skb can skip skb_cow_data().  If TCP\nreceive coalescing has moved shared frags into an unmarked skb, ESP can\nsee skb_has_shared_frag() as false and decrypt in place over page-cache\nbacked frags.\n\nPropagate SKBFL_SHARED_FRAG when skb_try_coalesce() transfers paged\nfrags.  The tailroom copy path does not need the marker because it copies\nbytes into @to's linear data rather than transferring frag descriptors.","ecosystems":["Red Hat:openshift:4.21::el10","Red Hat:openshift:4.21::el8","Red Hat:openshift:4.21::el9"],"exploits":{"exploitdb":1,"first_seen":"2026-05-14","github_poc":15,"max_poc_stars":16,"metasploit":1,"nuclei":0,"refs":[{"date":"2026-05-15T15:59:35Z","kind":"github_poc","ref":"https://github.com/0xredash/CVE-2026-46300","stars":16,"title":"CVE-2026-46300"},{"date":"2026-06-30T18:15:27Z","kind":"github_poc","ref":"https://github.com/MadExploits/CVE-2026-46300","stars":3,"title":"CVE-2026-43284 - CVE-2026-43500 - CVE-2026-46300 Variant of dirtyfrag exploit"},{"date":"2026-05-14T07:17:45Z","kind":"github_poc","ref":"https://github.com/HORKimhab/CVE-2026-46300","stars":2,"title":"CVE-2026-46300"},{"date":"2026-06-22T08:51:07Z","kind":"github_poc","ref":"https://github.com/azilRababe/CVE-2026-46300","stars":2,"title":"Technical analysis of CVE-2026-46300 (Fragnesia), a Linux kernel page-cache write vulnerability that enables local privilege escalation through SKBFL_SHARED_FRAG invariant violations in the networking stack."},{"date":"2026-05-14T07:27:07Z","kind":"github_poc","ref":"https://github.com/Sentebale/CVE-2026-46300","stars":1,"title":null},{"date":"2026-06-03T09:19:26Z","kind":"github_poc","ref":"https://github.com/1neptune/Fragnesia","stars":1,"title":"Add go CVE-2026-46300 (Fragnesia) local privilege escalation exploit"},{"date":"2026-05-14","kind":"metasploit","ref":"exploit/linux/local/cve_2026_46300_fragnesia","stars":null,"title":"Fragnesia LPE (CVE-2026-46300)"},{"date":"2026-05-17T09:00:39Z","kind":"github_poc","ref":"https://github.com/ExploitEoom/CVE-2026-46300","stars":0,"title":"Linux kernel root exploit"}],"tier":"exploited"},"has_fix":true,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","indexable":true,"kev":{"dateAdded":"2026-10-28","dueDate":"2026-10-31","knownRansomwareCampaignUse":"Unknown","product":"Kernel","requiredAction":"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.","vendorProject":"Linux","vulnerabilityName":"Linux Kernel Missing Initialization of a Variable Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel","redhat:enterprise_linux","redhat:enterprise_linux_aus","redhat:enterprise_linux_eus","redhat:openshift_container_platform"],"type":"memory_corruption","year":"2026"},"n_packages":133,"n_references":8,"next":{"headline":"spi: topcliff-pch: fix use-after-free on unbind","id":"CVE-2026-46301"},"packages":[{"ecosystem":"Red Hat:openshift:4.21::el10","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el10"],"introduced":["0"],"last_affected":[],"package":"openshift","purl":"pkg:rpm/redhat/openshift","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el10","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el10"],"introduced":["0"],"last_affected":[],"package":"openshift-hyperkube","purl":"pkg:rpm/redhat/openshift-hyperkube","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el10","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el10"],"introduced":["0"],"last_affected":[],"package":"openshift-kube-apiserver","purl":"pkg:rpm/redhat/openshift-kube-apiserver","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el10","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el10"],"introduced":["0"],"last_affected":[],"package":"openshift-kube-controller-manager","purl":"pkg:rpm/redhat/openshift-kube-controller-manager","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el10","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el10"],"introduced":["0"],"last_affected":[],"package":"openshift-kube-scheduler","purl":"pkg:rpm/redhat/openshift-kube-scheduler","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el10","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el10"],"introduced":["0"],"last_affected":[],"package":"openshift-kubelet","purl":"pkg:rpm/redhat/openshift-kubelet","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el8","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el8"],"introduced":["0"],"last_affected":[],"package":"openshift","purl":"pkg:rpm/redhat/openshift","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el8","fixed":["0:4.21.0-202605142021.p2.geab2218.assembly.stream.el8"],"introduced":["0"],"last_affected":[],"package":"openshift-hyperkube","purl":"pkg:rpm/redhat/openshift-hyperkube","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k","purl":"pkg:rpm/redhat/kernel-64k","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-core","purl":"pkg:rpm/redhat/kernel-64k-core","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug","purl":"pkg:rpm/redhat/kernel-64k-debug","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-core","purl":"pkg:rpm/redhat/kernel-64k-debug-core","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debug-debuginfo","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel","purl":"pkg:rpm/redhat/kernel-64k-debug-devel","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel-matched","purl":"pkg:rpm/redhat/kernel-64k-debug-devel-matched","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules","purl":"pkg:rpm/redhat/kernel-64k-debug-modules","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-core","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-core","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-extra","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-extra","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-internal","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-internal","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-partner","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-partner","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debuginfo","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-devel","purl":"pkg:rpm/redhat/kernel-64k-devel","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-devel-matched","purl":"pkg:rpm/redhat/kernel-64k-devel-matched","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules","purl":"pkg:rpm/redhat/kernel-64k-modules","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules-core","purl":"pkg:rpm/redhat/kernel-64k-modules-core","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules-extra","purl":"pkg:rpm/redhat/kernel-64k-modules-extra","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules-internal","purl":"pkg:rpm/redhat/kernel-64k-modules-internal","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules-partner","purl":"pkg:rpm/redhat/kernel-64k-modules-partner","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/redhat/kernel-abi-stablelists","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/redhat/kernel-core","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug","purl":"pkg:rpm/redhat/kernel-debug","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-core","purl":"pkg:rpm/redhat/kernel-debug-core","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-debug-debuginfo","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel","purl":"pkg:rpm/redhat/kernel-debug-devel","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel-matched","purl":"pkg:rpm/redhat/kernel-debug-devel-matched","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules","purl":"pkg:rpm/redhat/kernel-debug-modules","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-core","purl":"pkg:rpm/redhat/kernel-debug-modules-core","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-extra","purl":"pkg:rpm/redhat/kernel-debug-modules-extra","source":"RHBA-2026:20032"},{"ecosystem":"Red Hat:openshift:4.21::el9","fixed":["0:5.14.0-570.116.1.el9_6"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-internal","purl":"pkg:rpm/redhat/kernel-debug-modules-internal","source":"RHBA-2026:20032"}],"prev":{"headline":"hfsplus: fix held lock freed on hfsplus_fill_super()","id":"CVE-2026-46299"},"products":["Linux"],"published":"2026-05-23","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 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":"CC BY 4.0","name":"Red Hat","prefix":"RHBA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"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":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["Linux"]},"summary":"A missing shared-frag marker in Linux kernel TCP coalescing allows ESP to decrypt in-place over page-cache backed fragments, potentially leading to memory corruption.","url":"https://insights.sbomify.com/CVE-2026-46300/"}