{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-56658", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.841Z", "datePublished": "2024-12-27T15:06:21.516Z", "dateUpdated": "2024-12-27T15:06:21.516Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-27T15:06:21.516Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: defer final 'struct net' free in netns dismantle\n\nIlya reported a slab-use-after-free in dst_destroy [1]\n\nIssue is in xfrm6_net_init() and xfrm4_net_init() :\n\nThey copy xfrm[46]_dst_ops_template into net->xfrm.xfrm[46]_dst_ops.\n\nBut net structure might be freed before all the dst callbacks are\ncalled. So when dst_destroy() calls later :\n\nif (dst->ops->destroy)\n dst->ops->destroy(dst);\n\ndst->ops points to the old net->xfrm.xfrm[46]_dst_ops, which has been freed.\n\nSee a relevant issue fixed in :\n\nac888d58869b (\"net: do not delay dst_entries_add() in dst_release()\")\n\nA fix is to queue the 'struct net' to be freed after one\nanother cleanup_net() round (and existing rcu_barrier())\n\n[1]\n\nBUG: KASAN: slab-use-after-free in dst_destroy (net/core/dst.c:112)\nRead of size 8 at addr ffff8882137ccab0 by task swapper/37/0\nDec 03 05:46:18 kernel:\nCPU: 37 UID: 0 PID: 0 Comm: swapper/37 Kdump: loaded Not tainted 6.12.0 #67\nHardware name: Red Hat KVM/RHEL, BIOS 1.16.1-1.el9 04/01/2014\nCall Trace:\n <IRQ>\ndump_stack_lvl (lib/dump_stack.c:124)\nprint_address_description.constprop.0 (mm/kasan/report.c:378)\n? dst_destroy (net/core/dst.c:112)\nprint_report (mm/kasan/report.c:489)\n? dst_destroy (net/core/dst.c:112)\n? kasan_addr_to_slab (mm/kasan/common.c:37)\nkasan_report (mm/kasan/report.c:603)\n? dst_destroy (net/core/dst.c:112)\n? rcu_do_batch (kernel/rcu/tree.c:2567)\ndst_destroy (net/core/dst.c:112)\nrcu_do_batch (kernel/rcu/tree.c:2567)\n? __pfx_rcu_do_batch (kernel/rcu/tree.c:2491)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4339 kernel/locking/lockdep.c:4406)\nrcu_core (kernel/rcu/tree.c:2825)\nhandle_softirqs (kernel/softirq.c:554)\n__irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637)\nirq_exit_rcu (kernel/softirq.c:651)\nsysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049)\n </IRQ>\n <TASK>\nasm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702)\nRIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:743)\nCode: 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 6e ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 90 0f 00 2d c7 c9 27 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90\nRSP: 0018:ffff888100d2fe00 EFLAGS: 00000246\nRAX: 00000000001870ed RBX: 1ffff110201a5fc2 RCX: ffffffffb61a3e46\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb3d4d123\nRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed11c7e1835d\nR10: ffff888e3f0c1aeb R11: 0000000000000000 R12: 0000000000000000\nR13: ffff888100d20000 R14: dffffc0000000000 R15: 0000000000000000\n? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:148)\n? cpuidle_idle_call (kernel/sched/idle.c:186)\ndefault_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118)\ncpuidle_idle_call (kernel/sched/idle.c:186)\n? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168)\n? lock_release (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5848)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)\n? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59)\ndo_idle (kernel/sched/idle.c:326)\ncpu_startup_entry (kernel/sched/idle.c:423 (discriminator 1))\nstart_secondary (arch/x86/kernel/smpboot.c:202 arch/x86/kernel/smpboot.c:282)\n? __pfx_start_secondary (arch/x86/kernel/smpboot.c:232)\n? soft_restart_cpu (arch/x86/kernel/head_64.S:452)\ncommon_startup_64 (arch/x86/kernel/head_64.S:414)\n </TASK>\nDec 03 05:46:18 kernel:\nAllocated by task 12184:\nkasan_save_stack (mm/kasan/common.c:48)\nkasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)\n__kasan_slab_alloc (mm/kasan/common.c:319 mm/kasan/common.c:345)\nkmem_cache_alloc_noprof (mm/slub.c:4085 mm/slub.c:4134 mm/slub.c:4141)\ncopy_net_ns (net/core/net_namespace.c:421 net/core/net_namespace.c:480)\ncreate_new_namespaces\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/net_namespace.h", "net/core/net_namespace.c"], "versions": [{"version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8", "lessThan": "3267b254dc0a04dfa362a2be24573cfa6d2d78f5", "status": "affected", "versionType": "git"}, {"version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8", "lessThan": "b7a79e51297f7b82adb687086f5cb2da446f1e40", "status": "affected", "versionType": "git"}, {"version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8", "lessThan": "6610c7f8a8d47fd1123eed55ba8c11c2444d8842", "status": "affected", "versionType": "git"}, {"version": "a8a572a6b5f2a79280d6e302cb3c1cb1fbaeb3e8", "lessThan": "0f6ede9fbc747e2553612271bce108f7517e7a45", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/net_namespace.h", "net/core/net_namespace.c"], "versions": [{"version": "4.4", "status": "affected"}, {"version": "0", "lessThan": "4.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.121", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.67", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.6", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13-rc3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/3267b254dc0a04dfa362a2be24573cfa6d2d78f5"}, {"url": "https://git.kernel.org/stable/c/b7a79e51297f7b82adb687086f5cb2da446f1e40"}, {"url": "https://git.kernel.org/stable/c/6610c7f8a8d47fd1123eed55ba8c11c2444d8842"}, {"url": "https://git.kernel.org/stable/c/0f6ede9fbc747e2553612271bce108f7517e7a45"}], "title": "net: defer final 'struct net' free in netns dismantle", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: defer final 'struct net' free in netns dismantle\n\nIlya reported a slab-use-after-free in dst_destroy [1]\n\nIssue is in xfrm6_net_init() and xfrm4_net_init() :\n\nThey copy xfrm[46]_dst_ops_template into net->xfrm.xfrm[46]_dst_ops.\n\nBut net structure might be freed before all the dst callbacks are\ncalled. So when dst_destroy() calls later :\n\nif (dst->ops->destroy)\n dst->ops->destroy(dst);\n\ndst->ops points to the old net->xfrm.xfrm[46]_dst_ops, which has been freed.\n\nSee a relevant issue fixed in :\n\nac888d58869b (\"net: do not delay dst_entries_add() in dst_release()\")\n\nA fix is to queue the 'struct net' to be freed after one\nanother cleanup_net() round (and existing rcu_barrier())\n\n[1]\n\nBUG: KASAN: slab-use-after-free in dst_destroy (net/core/dst.c:112)\nRead of size 8 at addr ffff8882137ccab0 by task swapper/37/0\nDec 03 05:46:18 kernel:\nCPU: 37 UID: 0 PID: 0 Comm: swapper/37 Kdump: loaded Not tainted 6.12.0 #67\nHardware name: Red Hat KVM/RHEL, BIOS 1.16.1-1.el9 04/01/2014\nCall Trace:\n <IRQ>\ndump_stack_lvl (lib/dump_stack.c:124)\nprint_address_description.constprop.0 (mm/kasan/report.c:378)\n? dst_destroy (net/core/dst.c:112)\nprint_report (mm/kasan/report.c:489)\n? dst_destroy (net/core/dst.c:112)\n? kasan_addr_to_slab (mm/kasan/common.c:37)\nkasan_report (mm/kasan/report.c:603)\n? dst_destroy (net/core/dst.c:112)\n? rcu_do_batch (kernel/rcu/tree.c:2567)\ndst_destroy (net/core/dst.c:112)\nrcu_do_batch (kernel/rcu/tree.c:2567)\n? __pfx_rcu_do_batch (kernel/rcu/tree.c:2491)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4339 kernel/locking/lockdep.c:4406)\nrcu_core (kernel/rcu/tree.c:2825)\nhandle_softirqs (kernel/softirq.c:554)\n__irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637)\nirq_exit_rcu (kernel/softirq.c:651)\nsysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049)\n </IRQ>\n <TASK>\nasm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702)\nRIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:743)\nCode: 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 6e ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 90 0f 00 2d c7 c9 27 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90\nRSP: 0018:ffff888100d2fe00 EFLAGS: 00000246\nRAX: 00000000001870ed RBX: 1ffff110201a5fc2 RCX: ffffffffb61a3e46\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb3d4d123\nRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed11c7e1835d\nR10: ffff888e3f0c1aeb R11: 0000000000000000 R12: 0000000000000000\nR13: ffff888100d20000 R14: dffffc0000000000 R15: 0000000000000000\n? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:148)\n? cpuidle_idle_call (kernel/sched/idle.c:186)\ndefault_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118)\ncpuidle_idle_call (kernel/sched/idle.c:186)\n? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168)\n? lock_release (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5848)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)\n? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59)\ndo_idle (kernel/sched/idle.c:326)\ncpu_startup_entry (kernel/sched/idle.c:423 (discriminator 1))\nstart_secondary (arch/x86/kernel/smpboot.c:202 arch/x86/kernel/smpboot.c:282)\n? __pfx_start_secondary (arch/x86/kernel/smpboot.c:232)\n? soft_restart_cpu (arch/x86/kernel/head_64.S:452)\ncommon_startup_64 (arch/x86/kernel/head_64.S:414)\n </TASK>\nDec 03 05:46:18 kernel:\nAllocated by task 12184:\nkasan_save_stack (mm/kasan/common.c:48)\nkasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)\n__kasan_slab_alloc (mm/kasan/common.c:319 mm/kasan/common.c:345)\nkmem_cache_alloc_noprof (mm/slub.c:4085 mm/slub.c:4134 mm/slub.c:4141)\ncopy_net_ns (net/core/net_namespace.c:421 net/core/net_namespace.c:480)\ncreate_new_namespaces\n---truncated---"}], "id": "CVE-2024-56658", "lastModified": "2024-12-27T15:15:25.643", "metrics": {}, "published": "2024-12-27T15:15:25.643", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0f6ede9fbc747e2553612271bce108f7517e7a45"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3267b254dc0a04dfa362a2be24573cfa6d2d78f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6610c7f8a8d47fd1123eed55ba8c11c2444d8842"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b7a79e51297f7b82adb687086f5cb2da446f1e40"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: defer final 'struct net' free in netns dismantle", "id": "2334557", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334557"}, "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:\nnet: defer final 'struct net' free in netns dismantle\nIlya reported a slab-use-after-free in dst_destroy [1]\nIssue is in xfrm6_net_init() and xfrm4_net_init() :\nThey copy xfrm[46]_dst_ops_template into net->xfrm.xfrm[46]_dst_ops.\nBut net structure might be freed before all the dst callbacks are\ncalled. So when dst_destroy() calls later :\nif (dst->ops->destroy)\ndst->ops->destroy(dst);\ndst->ops points to the old net->xfrm.xfrm[46]_dst_ops, which has been freed.\nSee a relevant issue fixed in :\nac888d58869b (\"net: do not delay dst_entries_add() in dst_release()\")\nA fix is to queue the 'struct net' to be freed after one\nanother cleanup_net() round (and existing rcu_barrier())\n[1]\nBUG: KASAN: slab-use-after-free in dst_destroy (net/core/dst.c:112)\nRead of size 8 at addr ffff8882137ccab0 by task swapper/37/0\nDec 03 05:46:18 kernel:\nCPU: 37 UID: 0 PID: 0 Comm: swapper/37 Kdump: loaded Not tainted 6.12.0 #67\nHardware name: Red Hat KVM/RHEL, BIOS 1.16.1-1.el9 04/01/2014\nCall Trace:\n<IRQ>\ndump_stack_lvl (lib/dump_stack.c:124)\nprint_address_description.constprop.0 (mm/kasan/report.c:378)\n? dst_destroy (net/core/dst.c:112)\nprint_report (mm/kasan/report.c:489)\n? dst_destroy (net/core/dst.c:112)\n? kasan_addr_to_slab (mm/kasan/common.c:37)\nkasan_report (mm/kasan/report.c:603)\n? dst_destroy (net/core/dst.c:112)\n? rcu_do_batch (kernel/rcu/tree.c:2567)\ndst_destroy (net/core/dst.c:112)\nrcu_do_batch (kernel/rcu/tree.c:2567)\n? __pfx_rcu_do_batch (kernel/rcu/tree.c:2491)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4339 kernel/locking/lockdep.c:4406)\nrcu_core (kernel/rcu/tree.c:2825)\nhandle_softirqs (kernel/softirq.c:554)\n__irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637)\nirq_exit_rcu (kernel/softirq.c:651)\nsysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049)\n</IRQ>\n<TASK>\nasm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702)\nRIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:743)\nCode: 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 6e ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 90 0f 00 2d c7 c9 27 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90\nRSP: 0018:ffff888100d2fe00 EFLAGS: 00000246\nRAX: 00000000001870ed RBX: 1ffff110201a5fc2 RCX: ffffffffb61a3e46\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb3d4d123\nRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed11c7e1835d\nR10: ffff888e3f0c1aeb R11: 0000000000000000 R12: 0000000000000000\nR13: ffff888100d20000 R14: dffffc0000000000 R15: 0000000000000000\n? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:148)\n? cpuidle_idle_call (kernel/sched/idle.c:186)\ndefault_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118)\ncpuidle_idle_call (kernel/sched/idle.c:186)\n? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168)\n? lock_release (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5848)\n? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)\n? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59)\ndo_idle (kernel/sched/idle.c:326)\ncpu_startup_entry (kernel/sched/idle.c:423 (discriminator 1))\nstart_secondary (arch/x86/kernel/smpboot.c:202 arch/x86/kernel/smpboot.c:282)\n? __pfx_start_secondary (arch/x86/kernel/smpboot.c:232)\n? soft_restart_cpu (arch/x86/kernel/head_64.S:452)\ncommon_startup_64 (arch/x86/kernel/head_64.S:414)\n</TASK>\nDec 03 05:46:18 kernel:\nAllocated by task 12184:\nkasan_save_stack (mm/kasan/common.c:48)\nkasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69)\n__kasan_slab_alloc (mm/kasan/common.c:319 mm/kasan/common.c:345)\nkmem_cache_alloc_noprof (mm/slub.c:4085 mm/slub.c:4134 mm/slub.c:4141)\ncopy_net_ns (net/core/net_namespace.c:421 net/core/net_namespace.c:480)\ncreate_new_namespaces\n---truncated---"], "name": "CVE-2024-56658", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "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-2024-56658\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56658\nhttps://lore.kernel.org/linux-cve-announce/2024122750-CVE-2024-56658-01fc@gregkh/T"], "threat_severity": "Low"}