{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98260 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98260 is a high-severity use after free vulnerability in Linux, published on 6 Oct 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-2026-98260 and fix it if it is affected.\n\nWhat it is: CVE-2026-98260 is a high-severity use after free vulnerability in Linux, published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-98260 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-2026-98260/ (Markdown: https://insights.sbomify.com/CVE-2026-98260/index.md)","id":"CVE-2026-98260","markdown":"https://insights.sbomify.com/CVE-2026-98260/index.md","name":"CVE-2026-98260","record":{"aliases":["AZL-106044","BELL-CVE-2026-98260","DEBIAN-CVE-2026-98260","GHSA-pr95-77xq-3v99","RHSA-2026:83738","RHSA-2026:83739","RHSA-2026:83775","RHSA-2026:83797","UBUNTU-CVE-2026-98260"],"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 use-after-free in the Linux kernel's exec path allows local attackers to execute arbitrary code or escalate privileges via race conditions during thread execution.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nexec: Cleanup POSIX timers right after de_thread()\n\nA per-thread CPU timer holds a reference to the PID of the thread it is\nattached to and, while it is armed, its node is queued in that thread's\nposix_cputimers. The task is looked up by that PID.\n\nWhen a non-leader thread exec()s, de_thread() changes which task owns\nthat PID. pid_task(timer-\u003eit.cpu.pid, PIDTYPE_PID) then returns NULL,\nbut the node is still queued on tsk, which is alive. timer_lock_sighand()\ntakes a failed lookup to mean that the node is already dequeued, so it\nhas nothing to undo.\n\nbegin_new_exec() calls posix_cpu_timers_exit(me) right after\nexec_task_namespaces() and that removes the leftover node, so the state\nnormally stays invisible. But bprm-\u003epoint_of_no_return is set before\nde_thread(), so if unshare_files(), set_mm_exe_file(), exec_mmap() or\nexec_task_namespaces() fails, the task dies before it gets there.\nexit_itimers() then frees the k_itimer while its node is still queued,\nand reaping tsk later erases that freed node from the rbtree.\n\nIn short:\n\n      the non-leader thread B           the parent\n\n  timer_create(CLOCK_THREAD_CPUTIME_ID)\n  timer_settime()\n    arm_timer()            // the node is queued on B\n  execve()\n    de_thread(B)\n      exchange_tids(B, leader)  // B's PID now belongs to the leader\n      release_task(leader)\n        __exit_signal(leader)\n          posix_cpu_timers_exit(leader)  // cleans leader's queue, not B's\n          __unhash_process(leader)  // that PID has no task anymore\n    exec_mmap()\n      mmap_read_lock_killable(old_mm)\n                                kill(B, SIGKILL)\n      // -EINTR\n  get_signal()\n    do_exit()\n      exit_itimers()\n        posix_timer_delete()\n          posix_cpu_timer_del()\n        posix_timer_unhash_and_free()  // freed while still queued\n                                wait4()\n                                  release_task(B)\n                                    posix_cpu_timers_exit(B)\n                                      cleanup_timerqueue()\n                                        timerqueue_del()  // use-after-free\n\nMove the POSIX timer cleanup right after de_thread() before any of the\nlater failure conditions brings the task into do_exit().\n\n[ tglx: Move the cleanup right after de_thread() ]","ecosystems":["Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_e4s:9.2::baseos","Red Hat:rhel_e4s:9.2::nfv","Red Hat:rhel_e4s:9.2::realtime","Red Hat:rhel_e4s:9.4::appstream","Red Hat:rhel_e4s:9.4::baseos","Red Hat:rhel_e4s:9.4::nfv","Red Hat:rhel_e4s:9.4::realtime","Red Hat:rhel_eus:9.6::appstream","Red Hat:rhel_eus:9.6::baseos","Red Hat:rhel_eus:9.6::crb","Red Hat:rhel_eus:9.6::nfv","Red Hat:rhel_eus:9.6::realtime"],"exploits":{"exploitdb":0,"first_seen":"2026-10-18","github_poc":27,"max_poc_stars":35,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-10-18T23:26:39Z","kind":"github_poc","ref":"https://github.com/ylh440104/InfinityCore-Android-CVE-2026-98260","stars":35,"title":"CVE-2026-98260 (Timer) Android/ARM64 port"},{"date":"2026-10-26T09:32:43Z","kind":"github_poc","ref":"https://github.com/villager1314/CVE-2026-98260-Analysis","stars":33,"title":null},{"date":"2026-10-27T12:53:47Z","kind":"github_poc","ref":"https://github.com/YuKongA/CVE-2026-98260","stars":29,"title":"6.12.69-android16-6-g242e1a07f878"},{"date":"2026-10-25T12:51:04Z","kind":"github_poc","ref":"https://github.com/zsw125/o3root","stars":28,"title":"Shizuku-driven CVE-2026-98260 root + KernelSU runtime LKM loader for Xiaomi yingtian / lhasa (kernel 6.18.21)"},{"date":"2026-10-29T05:12:04Z","kind":"github_poc","ref":"https://github.com/Again1996-bit/CVE-2026-98260-GhostKey","stars":21,"title":"GhostKey - CVE-2026-98260 一键提权工具（Shizuku + NDK Native）"},{"date":"2026-10-23T08:56:37Z","kind":"github_poc","ref":"https://github.com/quyicheng03-boop/CVE-2026-98260-popsicle-android","stars":20,"title":"Target-specific Android CVE-2026-98260 research port for Xiaomi popsicle"},{"date":"2026-10-26T09:12:27Z","kind":"github_poc","ref":"https://github.com/Lw5959/xring-cve-2026-98260","stars":15,"title":"CVE-2026-98260（fs/exec.c POSIX CPU timer UAF）XRING O1 / Android 17 / 6.18.21 研究记录与 PC 一键流程（授权设备安全研究）"},{"date":"2026-10-28T15:15:02Z","kind":"github_poc","ref":"https://github.com/kpgc10kai/TimerRoot","stars":15,"title":"Android front end for CVE-2026-98260: root shell + KernelSU late-load through Shizuku"}],"tier":"poc_unverified"},"has_fix":true,"headline":"exec: Cleanup POSIX timers right after de_thread()","id":"CVE-2026-98260","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":387,"n_references":5,"next":{"headline":"cifs: Fix server use-after-free in cifs_chan_skip_or_disable()","id":"CVE-2026-98261"},"packages":[{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:7.0.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"bpftool-debuginfo","purl":"pkg:rpm/redhat/bpftool-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debug-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel","purl":"pkg:rpm/redhat/kernel-64k-debug-devel","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel-matched","purl":"pkg:rpm/redhat/kernel-64k-debug-devel-matched","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-devel","purl":"pkg:rpm/redhat/kernel-64k-devel","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-devel-matched","purl":"pkg:rpm/redhat/kernel-64k-devel-matched","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-debug-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel","purl":"pkg:rpm/redhat/kernel-debug-devel","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel-matched","purl":"pkg:rpm/redhat/kernel-debug-devel-matched","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo","purl":"pkg:rpm/redhat/kernel-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-aarch64","purl":"pkg:rpm/redhat/kernel-debuginfo-common-aarch64","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-ppc64le","purl":"pkg:rpm/redhat/kernel-debuginfo-common-ppc64le","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-s390x","purl":"pkg:rpm/redhat/kernel-debuginfo-common-s390x","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-x86_64","purl":"pkg:rpm/redhat/kernel-debuginfo-common-x86_64","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-devel","purl":"pkg:rpm/redhat/kernel-devel","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-devel-matched","purl":"pkg:rpm/redhat/kernel-devel-matched","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-doc","purl":"pkg:rpm/redhat/kernel-doc","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-debuginfo","purl":"pkg:rpm/redhat/kernel-tools-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-debuginfo","purl":"pkg:rpm/redhat/kernel-zfcpdump-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-devel","purl":"pkg:rpm/redhat/kernel-zfcpdump-devel","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-devel-matched","purl":"pkg:rpm/redhat/kernel-zfcpdump-devel-matched","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"perf","purl":"pkg:rpm/redhat/perf","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"perf-debuginfo","purl":"pkg:rpm/redhat/perf-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"python3-perf-debuginfo","purl":"pkg:rpm/redhat/python3-perf-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::appstream","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"rtla","purl":"pkg:rpm/redhat/rtla","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:7.0.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/redhat/bpftool","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:7.0.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"bpftool-debuginfo","purl":"pkg:rpm/redhat/bpftool-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k","purl":"pkg:rpm/redhat/kernel-64k","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-core","purl":"pkg:rpm/redhat/kernel-64k-core","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug","purl":"pkg:rpm/redhat/kernel-64k-debug","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-core","purl":"pkg:rpm/redhat/kernel-64k-debug-core","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debug-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules","purl":"pkg:rpm/redhat/kernel-64k-debug-modules","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-core","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-core","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-extra","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-extra","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debuginfo","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules","purl":"pkg:rpm/redhat/kernel-64k-modules","source":"RHSA-2026:83738"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:5.14.0-284.198.1.el9_2"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules-core","purl":"pkg:rpm/redhat/kernel-64k-modules-core","source":"RHSA-2026:83738"}],"prev":{"headline":"fs/dax: check zero or empty entry before converting xarray entry","id":"CVE-2026-98259"},"products":["Linux"],"published":"2026-10-06","related":[],"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":"RHSA"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A use-after-free in the Linux kernel's exec path allows local attackers to execute arbitrary code or escalate privileges via race conditions during thread execution.","url":"https://insights.sbomify.com/CVE-2026-98260/"}