{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-49837 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2022-49837 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 May 2025. 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-2022-49837 and fix it if it is affected.\n\nWhat it is: CVE-2022-49837 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 May 2025. 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-2022-49837 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-2022-49837/ (Markdown: https://insights.sbomify.com/CVE-2022-49837/index.md)","id":"CVE-2022-49837","markdown":"https://insights.sbomify.com/CVE-2022-49837/index.md","name":"CVE-2022-49837","record":{"aliases":["DEBIAN-CVE-2022-49837","GHSA-vvp4-j3wj-9jvq","ROOT-OS-DEBIAN-11-CVE-2022-49837","UBUNTU-CVE-2022-49837"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A memory leak in the Linux kernel's BPF verifier allows local attackers to exhaust kernel memory, potentially causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"cisa-adp","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-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix memory leaks in __check_func_call\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff88817139d000 (size 2048):\n  comm \"test_progs\", pid 33246, jiffies 4307381979 (age 45851.820s)\n  hex dump (first 32 bytes):\n    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c0000000045f075f0\u003e] kmalloc_trace+0x27/0xa0\n    [\u003c0000000098b7c90a\u003e] __check_func_call+0x316/0x1230\n    [\u003c00000000b4c3c403\u003e] check_helper_call+0x172e/0x4700\n    [\u003c00000000aa3875b7\u003e] do_check+0x21d8/0x45e0\n    [\u003c000000001147357b\u003e] do_check_common+0x767/0xaf0\n    [\u003c00000000b5a595b4\u003e] bpf_check+0x43e3/0x5bc0\n    [\u003c0000000011e391b1\u003e] bpf_prog_load+0xf26/0x1940\n    [\u003c0000000007f765c0\u003e] __sys_bpf+0xd2c/0x3650\n    [\u003c00000000839815d6\u003e] __x64_sys_bpf+0x75/0xc0\n    [\u003c00000000946ee250\u003e] do_syscall_64+0x3b/0x90\n    [\u003c0000000000506b7f\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe root case here is: In function prepare_func_exit(), the callee is\nnot released in the abnormal scenario after \"state-\u003ecurframe--;\". To\nfix, move \"state-\u003ecurframe--;\" to the very bottom of the function,\nright when we free callee and reset frame[] pointer to NULL, as Andrii\nsuggested.\n\nIn addition, function __check_func_call() has a similar problem. In\nthe abnormal scenario before \"state-\u003ecurframe++;\", the callee also\nshould be released by free_func_state().","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":"bpf: Fix memory leaks in __check_func_call","id":"CVE-2022-49837","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2022"},"n_packages":0,"n_references":3,"next":{"headline":"sctp: clear out_curr if all frag chunks of current msg are pruned","id":"CVE-2022-49838"},"packages":[],"prev":{"headline":"siox: fix possible memory leak in siox_device_add()","id":"CVE-2022-49836"},"products":["Linux"],"published":"2025-05-01","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":"2026-05-11","vendors":["Linux"]},"summary":"A memory leak in the Linux kernel's BPF verifier allows local attackers to exhaust kernel memory, potentially causing a denial of service.","url":"https://insights.sbomify.com/CVE-2022-49837/"}