{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-52637", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-52637", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2024-04-03T14:54:40.262Z", "updatedAt": "2026-08-05T09:10:50.061Z", "importedAt": "2026-10-24T01:57:03.413Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "can: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER)", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER)\n\nLock jsk->sk to prevent UAF when setsockopt(..., SO_J1939_FILTER, ...)\nmodifies jsk->filters while receiving packets.\n\nFollowing trace was seen on affected system:\n ==================================================================\n BUG: KASAN: slab-use-after-free in j1939_sk_recv_match_one+0x1af/0x2d0 [can_j1939]\n Read of size 4 at addr ffff888012144014 by task j1939/350\n\n CPU: 0 PID: 350 Comm: j1939 Tainted: G W OE 6.5.0-rc5 #1\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\n Call Trace:\n print_report+0xd3/0x620\n ? kasan_complete_mode_report_info+0x7d/0x200\n ? j1939_sk_recv_match_one+0x1af/0x2d0 [can_j1939]\n kasan_report+0xc2/0x100\n ? j1939_sk_recv_match_one+0x1af/0x2d0 [can_j1939]\n __asan_load4+0x84/0xb0\n j1939_sk_recv_match_one+0x1af/0x2d0 [can_j1939]\n j1939_sk_recv+0x20b/0x320 [can_j1939]\n ? __kasan_check_write+0x18/0x20\n ? __pfx_j1939_sk_recv+0x10/0x10 [can_j1939]\n ? j1939_simple_recv+0x69/0x280 [can_j1939]\n ? j1939_ac_recv+0x5e/0x310 [can_j1939]\n j1939_can_recv+0x43f/0x580 [can_j1939]\n ? __pfx_j1939_can_recv+0x10/0x10 [can_j1939]\n ? raw_rcv+0x42/0x3c0 [can_raw]\n ? __pfx_j1939_can_recv+0x10/0x10 [can_j1939]\n can_rcv_filter+0x11f/0x350 [can]\n can_receive+0x12f/0x190 [can]\n ? __pfx_can_rcv+0x10/0x10 [can]\n can_rcv+0xdd/0x130 [can]\n ? __pfx_can_rcv+0x10/0x10 [can]\n __netif_receive_skb_one_core+0x13d/0x150\n ? __pfx___netif_receive_skb_one_core+0x10/0x10\n ? __kasan_check_write+0x18/0x20\n ? _raw_spin_lock_irq+0x8c/0xe0\n __netif_receive_skb+0x23/0xb0\n process_backlog+0x107/0x260\n __napi_poll+0x69/0x310\n net_rx_action+0x2a1/0x580\n ? __pfx_net_rx_action+0x10/0x10\n ? __pfx__raw_spin_lock+0x10/0x10\n ? handle_irq_event+0x7d/0xa0\n __do_softirq+0xf3/0x3f8\n do_softirq+0x53/0x80\n \n \n __local_bh_enable_ip+0x6e/0x70\n netif_rx+0x16b/0x180\n can_send+0x32b/0x520 [can]\n ? __pfx_can_send+0x10/0x10 [can]\n ? __check_object_size+0x299/0x410\n raw_sendmsg+0x572/0x6d0 [can_raw]\n ? __pfx_raw_sendmsg+0x10/0x10 [can_raw]\n ? apparmor_socket_sendmsg+0x2f/0x40\n ? __pfx_raw_sendmsg+0x10/0x10 [can_raw]\n sock_sendmsg+0xef/0x100\n sock_write_iter+0x162/0x220\n ? __pfx_sock_write_iter+0x10/0x10\n ? __rtnl_unlock+0x47/0x80\n ? security_file_permission+0x54/0x320\n vfs_write+0x6ba/0x750\n ? __pfx_vfs_write+0x10/0x10\n ? __fget_light+0x1ca/0x1f0\n ? __rcu_read_unlock+0x5b/0x280\n ksys_write+0x143/0x170\n ? __pfx_ksys_write+0x10/0x10\n ? __kasan_check_read+0x15/0x20\n ? fpregs_assert_state_consistent+0x62/0x70\n __x64_sys_write+0x47/0x60\n do_syscall_64+0x60/0x90\n ? do_syscall_64+0x6d/0x90\n ? irqentry_exit+0x3f/0x50\n ? exc_page_fault+0x79/0xf0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\n Allocated by task 348:\n kasan_save_stack+0x2a/0x50\n kasan_set_track+0x29/0x40\n kasan_save_alloc_info+0x1f/0x30\n __kasan_kmalloc+0xb5/0xc0\n __kmalloc_node_track_caller+0x67/0x160\n j1939_sk_setsockopt+0x284/0x450 [can_j1939]\n __sys_setsockopt+0x15c/0x2f0\n __x64_sys_setsockopt+0x6b/0x80\n do_syscall_64+0x60/0x90\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\n Freed by task 349:\n kasan_save_stack+0x2a/0x50\n kasan_set_track+0x29/0x40\n kasan_save_free_info+0x2f/0x50\n __kasan_slab_free+0x12e/0x1c0\n __kmem_cache_free+0x1b9/0x380\n kfree+0x7a/0x120\n j1939_sk_setsockopt+0x3b2/0x450 [can_j1939]\n __sys_setsockopt+0x15c/0x2f0\n __x64_sys_setsockopt+0x6b/0x80\n do_syscall_64+0x60/0x90\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "status": "affected", "versionType": "git", "lessThan": "08de58abedf6e69396e1207e4f99ef8904b2b532" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "status": "affected", "versionType": "git", "lessThan": "978e50ef8c38dc71bd14d1b0143d554ff5d188ba" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "status": "affected", "versionType": "git", "lessThan": "41ccb5bcbf03f02d820bc6ea8390811859f558f8" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "status": "affected", "versionType": "git", "lessThan": "4dd684d4bb3cd5454e0bf6e2a1bdfbd5c9c872ed" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "status": "affected", "versionType": "git", "lessThan": "f84e7534457dcd7835be743517c35378bb4e7c50" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "status": "affected", "versionType": "git", "lessThan": "fc74b9cb789cae061bbca7b203a3842e059f6b5d" }, { "version": "9d71dd0c70099914fcd063135da3c580865e924c", "status": "affected", "versionType": "git", "lessThan": "efe7cf828039aedb297c1f9920b638fffee6aabc" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.4", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.4" }, { "version": "5.4.269", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.210", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.149", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.79", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.18", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.7.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.7.*" }, { "version": "6.8", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }