{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-49937 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-49937 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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-2024-49937 and fix it if it is affected.\n\nWhat it is: CVE-2024-49937 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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-2024-49937 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-2024-49937/ (Markdown: https://insights.sbomify.com/CVE-2024-49937/index.md)","id":"CVE-2024-49937","markdown":"https://insights.sbomify.com/CVE-2024-49937/index.md","name":"CVE-2024-49937","record":{"aliases":["AZL-53045","BELL-CVE-2024-49937","DEBIAN-CVE-2024-49937","GHSA-64qp-9xf4-2pch","ROOT-OS-DEBIAN-11-CVE-2024-49937","ROOT-OS-UBUNTU-2204-CVE-2024-49937","UBUNTU-CVE-2024-49937"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel WiFi","requires_auth":"low_privilege","summary":"A null pointer dereference in the Linux kernel WiFi subsystem can cause a system crash when starting Channel Availability Check in non-AP modes.","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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: Set correct chandef when starting CAC\n\nWhen starting CAC in a mode other than AP mode, it return a\n\"WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\"\ncaused by the chandef.chan being null at the end of CAC.\n\nSolution: Ensure the channel definition is set for the different modes\nwhen starting CAC to avoid getting a NULL 'chan' at the end of CAC.\n\n Call Trace:\n  ? show_regs.part.0+0x14/0x16\n  ? __warn+0x67/0xc0\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? report_bug+0xa7/0x130\n  ? exc_overflow+0x30/0x30\n  ? handle_bug+0x27/0x50\n  ? exc_invalid_op+0x18/0x60\n  ? handle_exception+0xf6/0xf6\n  ? exc_overflow+0x30/0x30\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? exc_overflow+0x30/0x30\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211]\n  ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211]\n  ? process_one_work+0x165/0x280\n  ? worker_thread+0x120/0x3f0\n  ? kthread+0xc2/0xf0\n  ? process_one_work+0x280/0x280\n  ? kthread_complete_and_exit+0x20/0x20\n  ? ret_from_fork+0x19/0x24\n\n[shorten subject, remove OCB, reorder cases to match previous list]","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":"wifi: cfg80211: Set correct chandef when starting CAC","id":"CVE-2024-49937","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":5,"next":{"headline":"wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit","id":"CVE-2024-49938"},"packages":[],"prev":{"headline":"net/xen-netback: prevent UAF in xenvif_flush_hash()","id":"CVE-2024-49936"},"products":["Linux"],"published":"2024-10-21","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel WiFi subsystem can cause a system crash when starting Channel Availability Check in non-AP modes.","url":"https://insights.sbomify.com/CVE-2024-49937/"}