{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-26998 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-26998 is a medium-severity vulnerability in Linux kernel, published on 1 May 2024. 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-2024-26998 and fix it if it is affected.\n\nWhat it is: CVE-2024-26998 is a medium-severity vulnerability in Linux kernel, published on 1 May 2024. 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-2024-26998 in the wild and no public exploit code.\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-2024-26998/ (Markdown: https://insights.sbomify.com/CVE-2024-26998/index.md)","id":"CVE-2024-26998","markdown":"https://insights.sbomify.com/CVE-2024-26998/index.md","name":"CVE-2024-26998","record":{"aliases":["BELL-CVE-2024-26998","DEBIAN-CVE-2024-26998","GHSA-r65x-4xhj-7g65","UBUNTU-CVE-2024-26998"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel serial driver","requires_auth":"low_privilege","summary":"A race condition in the Linux kernel serial core allows asynchronous callbacks to dereference a NULL pointer, causing a system crash.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: Clearing the circular buffer before NULLifying it\n\nThe circular buffer is NULLified in uart_tty_port_shutdown()\nunder the spin lock. However, the PM or other timer based callbacks\nmay still trigger after this event without knowning that buffer pointer\nis not valid. Since the serial code is a bit inconsistent in checking\nthe buffer state (some rely on the head-tail positions, some on the\nbuffer pointer), it's better to have both aligned, i.e. buffer pointer\nto be NULL and head-tail possitions to be the same, meaning it's empty.\nThis will prevent asynchronous calls to dereference NULL pointer as\nreported recently in 8250 case:\n\n  BUG: kernel NULL pointer dereference, address: 00000cf5\n  Workqueue: pm pm_runtime_work\n  EIP: serial8250_tx_chars (drivers/tty/serial/8250/8250_port.c:1809)\n  ...\n  ? serial8250_tx_chars (drivers/tty/serial/8250/8250_port.c:1809)\n  __start_tx (drivers/tty/serial/8250/8250_port.c:1551)\n  serial8250_start_tx (drivers/tty/serial/8250/8250_port.c:1654)\n  serial_port_runtime_suspend (include/linux/serial_core.h:667 drivers/tty/serial/serial_port.c:63)\n  __rpm_callback (drivers/base/power/runtime.c:393)\n  ? serial_port_remove (drivers/tty/serial/serial_port.c:50)\n  rpm_suspend (drivers/base/power/runtime.c:447)\n\nThe proposed change will prevent -\u003estart_tx() to be called during\nsuspend on shut down port.","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":"serial: core: Clearing the circular buffer before NULLifying it","id":"CVE-2024-26998","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2024"},"n_packages":0,"n_references":3,"next":{"headline":"serial/pmac_zilog: Remove flawed mitigation for rx irq flood","id":"CVE-2024-26999"},"packages":[],"prev":{"headline":"usb: dwc2: host: Fix dereference issue in DDMA completion flow.","id":"CVE-2024-26997"},"products":["Linux"],"published":"2024-05-01","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)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A race condition in the Linux kernel serial core allows asynchronous callbacks to dereference a NULL pointer, causing a system crash.","url":"https://insights.sbomify.com/CVE-2024-26998/"}