{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-56646", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.840Z", "datePublished": "2024-12-27T15:02:47.265Z", "dateUpdated": "2024-12-27T15:02:47.265Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-27T15:02:47.265Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: avoid possible NULL deref in modify_prefix_route()\n\nsyzbot found a NULL deref [1] in modify_prefix_route(), caused by one\nfib6_info without a fib6_table pointer set.\n\nThis can happen for net->ipv6.fib6_null_entry\n\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\nCPU: 1 UID: 0 PID: 5837 Comm: syz-executor888 Not tainted 6.12.0-syzkaller-09567-g7eef7e306d3c #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\n RIP: 0010:__lock_acquire+0xe4/0x3c40 kernel/locking/lockdep.c:5089\nCode: 08 84 d2 0f 85 15 14 00 00 44 8b 0d ca 98 f5 0e 45 85 c9 0f 84 b4 0e 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 96 2c 00 00 49 8b 04 24 48 3d a0 07 7f 93 0f 84\nRSP: 0018:ffffc900035d7268 EFLAGS: 00010006\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: 0000000000000006 RSI: 1ffff920006bae5f RDI: 0000000000000030\nRBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001\nR10: ffffffff90608e17 R11: 0000000000000001 R12: 0000000000000030\nR13: ffff888036334880 R14: 0000000000000000 R15: 0000000000000000\nFS: 0000555579e90380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ffc59cc4278 CR3: 0000000072b54000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849\n __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]\n _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178\n spin_lock_bh include/linux/spinlock.h:356 [inline]\n modify_prefix_route+0x30b/0x8b0 net/ipv6/addrconf.c:4831\n inet6_addr_modify net/ipv6/addrconf.c:4923 [inline]\n inet6_rtm_newaddr+0x12c7/0x1ab0 net/ipv6/addrconf.c:5055\n rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6920\n netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2541\n netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]\n netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347\n netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891\n sock_sendmsg_nosec net/socket.c:711 [inline]\n __sock_sendmsg net/socket.c:726 [inline]\n ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2583\n ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637\n __sys_sendmsg+0x16e/0x220 net/socket.c:2669\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fd1dcef8b79\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffc59cc4378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd1dcef8b79\nRDX: 0000000000040040 RSI: 0000000020000140 RDI: 0000000000000004\nRBP: 00000000000113fd R08: 0000000000000006 R09: 0000000000000006\nR10: 0000000000000006 R11: 0000000000000246 R12: 00007ffc59cc438c\nR13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001\n </TASK>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/addrconf.c"], "versions": [{"version": "5eb902b8e7193cdcb33242af0a56502e6b5206e9", "lessThan": "01f95357e47219a9c4b29e177b717edbfab721b4", "status": "affected", "versionType": "git"}, {"version": "5eb902b8e7193cdcb33242af0a56502e6b5206e9", "lessThan": "a747e02430dfb3657141f99aa6b09331283fa493", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/addrconf.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.5", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13-rc2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/01f95357e47219a9c4b29e177b717edbfab721b4"}, {"url": "https://git.kernel.org/stable/c/a747e02430dfb3657141f99aa6b09331283fa493"}], "title": "ipv6: avoid possible NULL deref in modify_prefix_route()", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: avoid possible NULL deref in modify_prefix_route()\n\nsyzbot found a NULL deref [1] in modify_prefix_route(), caused by one\nfib6_info without a fib6_table pointer set.\n\nThis can happen for net->ipv6.fib6_null_entry\n\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\nCPU: 1 UID: 0 PID: 5837 Comm: syz-executor888 Not tainted 6.12.0-syzkaller-09567-g7eef7e306d3c #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\n RIP: 0010:__lock_acquire+0xe4/0x3c40 kernel/locking/lockdep.c:5089\nCode: 08 84 d2 0f 85 15 14 00 00 44 8b 0d ca 98 f5 0e 45 85 c9 0f 84 b4 0e 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 96 2c 00 00 49 8b 04 24 48 3d a0 07 7f 93 0f 84\nRSP: 0018:ffffc900035d7268 EFLAGS: 00010006\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: 0000000000000006 RSI: 1ffff920006bae5f RDI: 0000000000000030\nRBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001\nR10: ffffffff90608e17 R11: 0000000000000001 R12: 0000000000000030\nR13: ffff888036334880 R14: 0000000000000000 R15: 0000000000000000\nFS: 0000555579e90380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ffc59cc4278 CR3: 0000000072b54000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849\n __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]\n _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178\n spin_lock_bh include/linux/spinlock.h:356 [inline]\n modify_prefix_route+0x30b/0x8b0 net/ipv6/addrconf.c:4831\n inet6_addr_modify net/ipv6/addrconf.c:4923 [inline]\n inet6_rtm_newaddr+0x12c7/0x1ab0 net/ipv6/addrconf.c:5055\n rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6920\n netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2541\n netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]\n netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347\n netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891\n sock_sendmsg_nosec net/socket.c:711 [inline]\n __sock_sendmsg net/socket.c:726 [inline]\n ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2583\n ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637\n __sys_sendmsg+0x16e/0x220 net/socket.c:2669\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fd1dcef8b79\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffc59cc4378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd1dcef8b79\nRDX: 0000000000040040 RSI: 0000000020000140 RDI: 0000000000000004\nRBP: 00000000000113fd R08: 0000000000000006 R09: 0000000000000006\nR10: 0000000000000006 R11: 0000000000000246 R12: 00007ffc59cc438c\nR13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001\n </TASK>"}], "id": "CVE-2024-56646", "lastModified": "2024-12-27T15:15:24.367", "metrics": {}, "published": "2024-12-27T15:15:24.367", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/01f95357e47219a9c4b29e177b717edbfab721b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a747e02430dfb3657141f99aa6b09331283fa493"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ipv6: avoid possible NULL deref in modify_prefix_route()", "id": "2334566", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334566"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nipv6: avoid possible NULL deref in modify_prefix_route()\nsyzbot found a NULL deref [1] in modify_prefix_route(), caused by one\nfib6_info without a fib6_table pointer set.\nThis can happen for net->ipv6.fib6_null_entry\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\nCPU: 1 UID: 0 PID: 5837 Comm: syz-executor888 Not tainted 6.12.0-syzkaller-09567-g7eef7e306d3c #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nRIP: 0010:__lock_acquire+0xe4/0x3c40 kernel/locking/lockdep.c:5089\nCode: 08 84 d2 0f 85 15 14 00 00 44 8b 0d ca 98 f5 0e 45 85 c9 0f 84 b4 0e 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 96 2c 00 00 49 8b 04 24 48 3d a0 07 7f 93 0f 84\nRSP: 0018:ffffc900035d7268 EFLAGS: 00010006\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: 0000000000000006 RSI: 1ffff920006bae5f RDI: 0000000000000030\nRBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001\nR10: ffffffff90608e17 R11: 0000000000000001 R12: 0000000000000030\nR13: ffff888036334880 R14: 0000000000000000 R15: 0000000000000000\nFS: 0000555579e90380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ffc59cc4278 CR3: 0000000072b54000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n<TASK>\nlock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849\n__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]\n_raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178\nspin_lock_bh include/linux/spinlock.h:356 [inline]\nmodify_prefix_route+0x30b/0x8b0 net/ipv6/addrconf.c:4831\ninet6_addr_modify net/ipv6/addrconf.c:4923 [inline]\ninet6_rtm_newaddr+0x12c7/0x1ab0 net/ipv6/addrconf.c:5055\nrtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6920\nnetlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2541\nnetlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]\nnetlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347\nnetlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891\nsock_sendmsg_nosec net/socket.c:711 [inline]\n__sock_sendmsg net/socket.c:726 [inline]\n____sys_sendmsg+0xaaf/0xc90 net/socket.c:2583\n___sys_sendmsg+0x135/0x1e0 net/socket.c:2637\n__sys_sendmsg+0x16e/0x220 net/socket.c:2669\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fd1dcef8b79\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffc59cc4378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd1dcef8b79\nRDX: 0000000000040040 RSI: 0000000020000140 RDI: 0000000000000004\nRBP: 00000000000113fd R08: 0000000000000006 R09: 0000000000000006\nR10: 0000000000000006 R11: 0000000000000246 R12: 00007ffc59cc438c\nR13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001\n</TASK>"], "name": "CVE-2024-56646", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56646\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56646\nhttps://lore.kernel.org/linux-cve-announce/2024122738-CVE-2024-56646-e78e@gregkh/T"], "threat_severity": "Low"}