CVE-2024-50261

{"id": "CVE-2024-50261", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-11-09T11:15:11.610", "references": [{"url": "https://git.kernel.org/stable/c/4614640f1d5c93c22272117dc256e9940ccac8e8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/872932cf75cf859804370a265dd58118129386fa", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9f5ae743dbe9a2458540a7d35fff0f990df025cf", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f1e54d11b210b53d418ff1476c6b58a2f434dfc0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmacsec: Fix use-after-free while sending the offloading packet\n\nKASAN reports the following UAF. The metadata_dst, which is used to\nstore the SCI value for macsec offload, is already freed by\nmetadata_dst_free() in macsec_free_netdev(), while driver still use it\nfor sending the packet.\n\nTo fix this issue, dst_release() is used instead to release\nmetadata_dst. So it is not freed instantly in macsec_free_netdev() if\nstill referenced by skb.\n\n BUG: KASAN: slab-use-after-free in mlx5e_xmit+0x1e8f/0x4190 [mlx5_core]\n Read of size 2 at addr ffff88813e42e038 by task kworker/7:2/714\n [...]\n Workqueue: mld mld_ifc_work\n Call Trace:\n <TASK>\n dump_stack_lvl+0x51/0x60\n print_report+0xc1/0x600\n kasan_report+0xab/0xe0\n mlx5e_xmit+0x1e8f/0x4190 [mlx5_core]\n dev_hard_start_xmit+0x120/0x530\n sch_direct_xmit+0x149/0x11e0\n __qdisc_run+0x3ad/0x1730\n __dev_queue_xmit+0x1196/0x2ed0\n vlan_dev_hard_start_xmit+0x32e/0x510 [8021q]\n dev_hard_start_xmit+0x120/0x530\n __dev_queue_xmit+0x14a7/0x2ed0\n macsec_start_xmit+0x13e9/0x2340\n dev_hard_start_xmit+0x120/0x530\n __dev_queue_xmit+0x14a7/0x2ed0\n ip6_finish_output2+0x923/0x1a70\n ip6_finish_output+0x2d7/0x970\n ip6_output+0x1ce/0x3a0\n NF_HOOK.constprop.0+0x15f/0x190\n mld_sendpack+0x59a/0xbd0\n mld_ifc_work+0x48a/0xa80\n process_one_work+0x5aa/0xe50\n worker_thread+0x79c/0x1290\n kthread+0x28f/0x350\n ret_from_fork+0x2d/0x70\n ret_from_fork_asm+0x11/0x20\n </TASK>\n\n Allocated by task 3922:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x10/0x30\n __kasan_kmalloc+0x77/0x90\n __kmalloc_noprof+0x188/0x400\n metadata_dst_alloc+0x1f/0x4e0\n macsec_newlink+0x914/0x1410\n __rtnl_newlink+0xe08/0x15b0\n rtnl_newlink+0x5f/0x90\n rtnetlink_rcv_msg+0x667/0xa80\n netlink_rcv_skb+0x12c/0x360\n netlink_unicast+0x551/0x770\n netlink_sendmsg+0x72d/0xbd0\n __sock_sendmsg+0xc5/0x190\n ____sys_sendmsg+0x52e/0x6a0\n ___sys_sendmsg+0xeb/0x170\n __sys_sendmsg+0xb5/0x140\n do_syscall_64+0x4c/0x100\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\n Freed by task 4011:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x10/0x30\n kasan_save_free_info+0x37/0x50\n poison_slab_object+0x10c/0x190\n __kasan_slab_free+0x11/0x30\n kfree+0xe0/0x290\n macsec_free_netdev+0x3f/0x140\n netdev_run_todo+0x450/0xc70\n rtnetlink_rcv_msg+0x66f/0xa80\n netlink_rcv_skb+0x12c/0x360\n netlink_unicast+0x551/0x770\n netlink_sendmsg+0x72d/0xbd0\n __sock_sendmsg+0xc5/0x190\n ____sys_sendmsg+0x52e/0x6a0\n ___sys_sendmsg+0xeb/0x170\n __sys_sendmsg+0xb5/0x140\n do_syscall_64+0x4c/0x100\n entry_SYSCALL_64_after_hwframe+0x4b/0x53"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: macsec: Se corrige el use-after-free al enviar el paquete de descarga KASAN informa el siguiente UAF. El metadata_dst, que se utiliza para almacenar el valor SCI para la descarga de macsec, ya est\u00e1 liberado por metadata_dst_free() en macsec_free_netdev(), mientras que el controlador a\u00fan lo usa para enviar el paquete. Para solucionar este problema, se utiliza dst_release() en su lugar para liberar metadata_dst. Por lo tanto, no se libera instant\u00e1neamente en macsec_free_netdev() si a\u00fan se hace referencia a \u00e9l mediante skb. ERROR: KASAN: uso de losa despu\u00e9s de la liberaci\u00f3n en mlx5e_xmit+0x1e8f/0x4190 [mlx5_core] Lectura de tama\u00f1o 2 en la direcci\u00f3n ffff88813e42e038 por la tarea kworker/7:2/714 [...] Cola de trabajo: mld mld_ifc_work Seguimiento de llamadas: dump_stack_lvl+0x51/0x60 print_report+0xc1/0x600 kasan_report+0xab/0xe0 mlx5e_xmit+0x1e8f/0x4190 [mlx5_core] dev_hard_start_xmit+0x120/0x530 sch_direct_xmit+0x149/0x11e0 __qdisc_run+0x3ad/0x1730 __dev_queue_xmit+0x1196/0x2ed0 vlan_dev_hard_start_xmit+0x32e/0x510 [8021q] dev_hard_start_xmit+0x120/0x530 __dev_queue_xmit+0x14a7/0x2ed0 macsec_start_xmit+0x13e9/0x2340 dev_hard_start_xmit+0x120/0x530 __dev_queue_xmit+0x14a7/0x2ed0 ip6_finish_output2+0x923/0x1a70 ip6_finish_output+0x2d7/0x970 ip6_output+0x1ce/0x3a0 Asignado por la tarea 3922: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 __kasan_kmalloc+0x77/0x90 __kmalloc_noprof+0x188/0x400 metadatos_dst_alloc+0x1f/0x4e0 macsec_newlink+0x914/0x1410 __rtnl_newlink+0xe08/0x15b0 rtnl_newlink+0x5f/0x90 rtnetlink_rcv_msg+0x667/0xa80 netlink_rcv_skb+0x12c/0x360 netlink_unicast+0x551/0x770 netlink_sendmsg+0x72d/0xbd0 __sock_sendmsg+0xc5/0x190 ____sys_sendmsg+0x52e/0x6a0 ___sys_sendmsg+0xeb/0x170 __sys_sendmsg+0xb5/0x140 do_syscall_64+0x4c/0x100 entry_SYSCALL_64_after_hwframe+0x4b/0x53 Liberado por la tarea 4011: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 kasan_save_free_info+0x37/0x50 poison_slab_object+0x10c/0x190 __kasan_slab_free+0x11/0x30 kfree+0xe0/0x290 macsec_free_netdev+0x3f/0x140 netdev_run_todo+0x450/0xc70 rtnetlink_rcv_msg+0x66f/0xa80 netlink_rcv_skb+0x12c/0x360 netlink_unicast+0x551/0x770 netlink_sendmsg+0x72d/0xbd0 __sock_sendmsg+0xc5/0x190 ____sys_sendmsg+0x52e/0x6a0 ___sys_sendmsg+0xeb/0x170 __sys_sendmsg+0xb5/0x140 hacer_syscall_64+0x4c/0x100 entrada_SYSCALL_64_despu\u00e9s_hwframe+0x4b/0x53"}], "lastModified": "2024-11-14T18:24:41.597", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B71B7466-354C-4D9E-881B-828FC1310D19", "versionEndExcluding": "6.1.116", "versionStartIncluding": "6.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "75088E5E-2400-4D20-915F-7A65C55D9CCD", "versionEndExcluding": "6.6.60", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E96F53A4-5E87-4A70-BD9A-BC327828D57F", "versionEndExcluding": "6.11.7", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0F717D8-3014-4F84-8086-0124B2111379"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24DBE6C7-2AAE-4818-AED2-E131F153D2FA"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}