{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-52922 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-52922 is a high-severity use after free vulnerability in Linux kernel, published on 28 Nov 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-2023-52922 and fix it if it is affected.\n\nWhat it is: CVE-2023-52922 is a high-severity use after free vulnerability in Linux kernel, published on 28 Nov 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-2023-52922 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-2023-52922/ (Markdown: https://insights.sbomify.com/CVE-2023-52922/index.md)","id":"CVE-2023-52922","markdown":"https://insights.sbomify.com/CVE-2023-52922/index.md","name":"CVE-2023-52922","record":{"aliases":["ALSA-2025:3026","ALSA-2025:3027","BELL-CVE-2023-52922","DEBIAN-CVE-2023-52922","GHSA-56gp-6mw9-wpfj","RHSA-2025:3024","RHSA-2025:3025","RHSA-2025:3026","RHSA-2025:3027","RHSA-2025:3048","RHSA-2025:3049","RHSA-2025:3093","RHSA-2025:3094","RHSA-2025:3095","RHSA-2025:3096","RHSA-2025:3097","RHSA-2025:3112","RLSA-2025:3026","RLSA-2025:3027","UBUNTU-CVE-2023-52922"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel CAN BCM","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel's CAN BCM module allows local attackers to cause a denial of service or potentially execute code via procfs access.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"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-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: Fix UAF in bcm_proc_show()\n\nBUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80\nRead of size 8 at addr ffff888155846230 by task cat/7862\n\nCPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0xd5/0x150\n print_report+0xc1/0x5e0\n kasan_report+0xba/0xf0\n bcm_proc_show+0x969/0xa80\n seq_read_iter+0x4f6/0x1260\n seq_read+0x165/0x210\n proc_reg_read+0x227/0x300\n vfs_read+0x1d5/0x8d0\n ksys_read+0x11e/0x240\n do_syscall_64+0x35/0xb0\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nAllocated by task 7846:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n __kasan_kmalloc+0x9e/0xa0\n bcm_sendmsg+0x264b/0x44e0\n sock_sendmsg+0xda/0x180\n ____sys_sendmsg+0x735/0x920\n ___sys_sendmsg+0x11d/0x1b0\n __sys_sendmsg+0xfa/0x1d0\n do_syscall_64+0x35/0xb0\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nFreed by task 7846:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n kasan_save_free_info+0x27/0x40\n ____kasan_slab_free+0x161/0x1c0\n slab_free_freelist_hook+0x119/0x220\n __kmem_cache_free+0xb4/0x2e0\n rcu_core+0x809/0x1bd0\n\nbcm_op is freed before procfs entry be removed in bcm_release(),\nthis lead to bcm_proc_show() may read the freed bcm_op.","ecosystems":["AlmaLinux:8","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:8::nfv","Red Hat:enterprise_linux:8::realtime","Red Hat:enterprise_linux:9::baseos","Red Hat:rhel_e4s:8.4::baseos","Red Hat:rhel_e4s:8.6::baseos","Red Hat:rhel_e4s:9.0::baseos","Red Hat:rhel_eus:8.8::baseos","Red Hat:rhel_eus:9.2::appstream","Red Hat:rhel_eus:9.2::baseos","Red Hat:rhel_eus:9.2::crb","Red Hat:rhel_eus:9.2::nfv","Red Hat:rhel_eus:9.2::realtime","Red Hat:rhel_eus:9.4::baseos","Rocky Linux:8"],"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":"can: bcm: Fix UAF in bcm_proc_show()","id":"CVE-2023-52922","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2023"},"n_packages":315,"n_references":8,"next":{"headline":"netfilter: nf_tables: adapt set backend to use GC transaction API","id":"CVE-2023-52923"},"packages":[{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/almalinux/bpftool","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/almalinux/kernel","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/almalinux/kernel-abi-stablelists","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/almalinux/kernel-core","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-cross-headers","purl":"pkg:rpm/almalinux/kernel-cross-headers","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug","purl":"pkg:rpm/almalinux/kernel-debug","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-core","purl":"pkg:rpm/almalinux/kernel-debug-core","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel","purl":"pkg:rpm/almalinux/kernel-debug-devel","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules","purl":"pkg:rpm/almalinux/kernel-debug-modules","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-debug-modules-extra","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-devel","purl":"pkg:rpm/almalinux/kernel-devel","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-doc","purl":"pkg:rpm/almalinux/kernel-doc","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-headers","purl":"pkg:rpm/almalinux/kernel-headers","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules","purl":"pkg:rpm/almalinux/kernel-modules","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-extra","purl":"pkg:rpm/almalinux/kernel-modules-extra","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt","purl":"pkg:rpm/almalinux/kernel-rt","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-core","purl":"pkg:rpm/almalinux/kernel-rt-core","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug","purl":"pkg:rpm/almalinux/kernel-rt-debug","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-core","purl":"pkg:rpm/almalinux/kernel-rt-debug-core","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-devel","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-extra","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-devel","purl":"pkg:rpm/almalinux/kernel-rt-devel","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules","purl":"pkg:rpm/almalinux/kernel-rt-modules","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.rt7.386.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-modules-extra","source":"ALSA-2025:3027"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools","purl":"pkg:rpm/almalinux/kernel-tools","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs","purl":"pkg:rpm/almalinux/kernel-tools-libs","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs-devel","purl":"pkg:rpm/almalinux/kernel-tools-libs-devel","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump","purl":"pkg:rpm/almalinux/kernel-zfcpdump","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-core","purl":"pkg:rpm/almalinux/kernel-zfcpdump-core","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-devel","purl":"pkg:rpm/almalinux/kernel-zfcpdump-devel","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules-extra","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules-extra","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"perf","purl":"pkg:rpm/almalinux/perf","source":"ALSA-2025:3026"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3-perf","purl":"pkg:rpm/almalinux/python3-perf","source":"ALSA-2025:3026"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/redhat/bpftool","source":"RHSA-2025:3026"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool-debuginfo","purl":"pkg:rpm/redhat/bpftool-debuginfo","source":"RHSA-2025:3026"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2025:3026"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/redhat/kernel-abi-stablelists","source":"RHSA-2025:3026"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.45.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/redhat/kernel-core","source":"RHSA-2025:3026"}],"prev":{"headline":"drm/amdgpu: fix possible UAF in amdgpu_cs_pass1()","id":"CVE-2023-52921"},"products":["Linux"],"published":"2024-11-28","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":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"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":"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":"total"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's CAN BCM module allows local attackers to cause a denial of service or potentially execute code via procfs access.","url":"https://insights.sbomify.com/CVE-2023-52922/"}