CVE-2024-50110

{"id": "CVE-2024-50110", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-11-05T18:15:14.370", "references": [{"url": "https://git.kernel.org/stable/c/1e8fbd2441cb2ea28d6825f2985bf7d84af060bb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/610d4cea9b442b22b4820695fc3335e64849725e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6889cd2a93e1e3606b3f6e958aa0924e836de4d2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c73bca72b84b453c8d26a5e7673b20adb294bf54", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dc2ad8e8818e4bf1a93db78d81745b4877b32972", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-908"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix one more kernel-infoleak in algo dumping\n\nDuring fuzz testing, the following issue was discovered:\n\nBUG: KMSAN: kernel-infoleak in _copy_to_iter+0x598/0x2a30\n _copy_to_iter+0x598/0x2a30\n __skb_datagram_iter+0x168/0x1060\n skb_copy_datagram_iter+0x5b/0x220\n netlink_recvmsg+0x362/0x1700\n sock_recvmsg+0x2dc/0x390\n __sys_recvfrom+0x381/0x6d0\n __x64_sys_recvfrom+0x130/0x200\n x64_sys_call+0x32c8/0x3cc0\n do_syscall_64+0xd8/0x1c0\n entry_SYSCALL_64_after_hwframe+0x79/0x81\n\nUninit was stored to memory at:\n copy_to_user_state_extra+0xcc1/0x1e00\n dump_one_state+0x28c/0x5f0\n xfrm_state_walk+0x548/0x11e0\n xfrm_dump_sa+0x1e0/0x840\n netlink_dump+0x943/0x1c40\n __netlink_dump_start+0x746/0xdb0\n xfrm_user_rcv_msg+0x429/0xc00\n netlink_rcv_skb+0x613/0x780\n xfrm_netlink_rcv+0x77/0xc0\n netlink_unicast+0xe90/0x1280\n netlink_sendmsg+0x126d/0x1490\n __sock_sendmsg+0x332/0x3d0\n ____sys_sendmsg+0x863/0xc30\n ___sys_sendmsg+0x285/0x3e0\n __x64_sys_sendmsg+0x2d6/0x560\n x64_sys_call+0x1316/0x3cc0\n do_syscall_64+0xd8/0x1c0\n entry_SYSCALL_64_after_hwframe+0x79/0x81\n\nUninit was created at:\n __kmalloc+0x571/0xd30\n attach_auth+0x106/0x3e0\n xfrm_add_sa+0x2aa0/0x4230\n xfrm_user_rcv_msg+0x832/0xc00\n netlink_rcv_skb+0x613/0x780\n xfrm_netlink_rcv+0x77/0xc0\n netlink_unicast+0xe90/0x1280\n netlink_sendmsg+0x126d/0x1490\n __sock_sendmsg+0x332/0x3d0\n ____sys_sendmsg+0x863/0xc30\n ___sys_sendmsg+0x285/0x3e0\n __x64_sys_sendmsg+0x2d6/0x560\n x64_sys_call+0x1316/0x3cc0\n do_syscall_64+0xd8/0x1c0\n entry_SYSCALL_64_after_hwframe+0x79/0x81\n\nBytes 328-379 of 732 are uninitialized\nMemory access of size 732 starts at ffff88800e18e000\nData copied to user address 00007ff30f48aff0\n\nCPU: 2 PID: 18167 Comm: syz-executor.0 Not tainted 6.8.11 #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n\nFixes copying of xfrm algorithms where some random\ndata of the structure fields can end up in userspace.\nPadding in structures may be filled with random (possibly sensitve)\ndata and should never be given directly to user-space.\n\nA similar issue was resolved in the commit\n8222d5910dae (\"xfrm: Zero padding when dumping algos and encap\")\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xfrm: corrige una fuga de informaci\u00f3n del kernel m\u00e1s en el volcado de algoritmos. Durante las pruebas fuzz, se descubri\u00f3 el siguiente problema: ERROR: KMSAN: fuga de informaci\u00f3n del kernel en _copy_to_iter+0x598/0x2a30 _copy_to_iter+0x598/0x2a30 __skb_datagram_iter+0x168/0x1060 skb_copy_datagram_iter+0x5b/0x220 netlink_recvmsg+0x362/0x1700 sock_recvmsg+0x2dc/0x390 __sys_recvfrom+0x381/0x6d0 __x64_sys_recvfrom+0x130/0x200 x64_sys_call+0x32c8/0x3cc0 do_syscall_64+0xd8/0x1c0 entry_SYSCALL_64_after_hwframe+0x79/0x81 Ununit se almacen\u00f3 en la memoria en: copy_to_user_state_extra+0xcc1/0x1e00 dump_one_state+0x28c/0x5f0 xfrm_state_walk+0x548/0x11e0 xfrm_dump_sa+0x1e0/0x840 netlink_dump+0x943/0x1c40 __netlink_dump_start+0x746/0xdb0 xfrm_user_rcv_msg+0x429/0xc00 netlink_rcv_skb+0x613/0x780 xfrm_netlink_rcv+0x77/0xc0 netlink_unicast+0xe90/0x1280 netlink_sendmsg+0x126d/0x1490 __sock_sendmsg+0x332/0x3d0 ____sys_sendmsg+0x863/0xc30 ___sys_sendmsg+0x285/0x3e0 __x64_sys_sendmsg+0x2d6/0x560 x64_sys_call+0x1316/0x3cc0 do_syscall_64+0xd8/0x1c0 entry_SYSCALL_64_after_hwframe+0x79/0x81 Uninit se cre\u00f3 en: __kmalloc+0x571/0xd30 attached_auth+0x106/0x3e0 xfrm_add_sa+0x2aa0/0x4230 xfrm_user_rcv_msg+0x832/0xc00 netlink_rcv_skb+0x613/0x780 xfrm_netlink_rcv+0x77/0xc0 netlink_unicast+0xe90/0x1280 netlink_sendmsg+0x126d/0x1490 __sock_sendmsg+0x332/0x3d0 ____sys_sendmsg+0x863/0xc30 ___sys_sendmsg+0x285/0x3e0 __x64_sys_sendmsg+0x2d6/0x560 x64_sys_call+0x1316/0x3cc0 do_syscall_64+0xd8/0x1c0 entry_SYSCALL_64_after_hwframe+0x79/0x81 Los bytes 328-379 de 732 no est\u00e1n inicializados El acceso a la memoria de tama\u00f1o 732 comienza en ffff88800e18e000 Datos copiados a la direcci\u00f3n de usuario 00007ff30f48aff0 CPU: 2 PID: 18167 Comm: syz-executor.0 No contaminado 6.8.11 #1 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Corrige la copia de algoritmos xfrm donde algunos datos aleatorios de los campos de estructura pueden terminar en el espacio de usuario. El relleno en las estructuras se puede rellenar con datos aleatorios (posiblemente confidenciales) y nunca se debe proporcionar directamente al espacio de usuario. Un problema similar se resolvi\u00f3 en la confirmaci\u00f3n 8222d5910dae (\"xfrm: relleno de ceros al volcar algoritmos y encap\") encontrado por Linux Verification Center (linuxtesting.org) con Syzkaller."}], "lastModified": "2024-11-08T21:05:35.453", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A9BA1C73-2D2E-45E3-937B-276A28AEB5FC", "versionEndExcluding": "5.15.170", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C08A77A6-E42E-4EFD-B5A1-2BF6CBBB42AE", "versionEndExcluding": "6.1.115", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5D15CA59-D15C-4ACD-8B03-A072DEAD2081", "versionEndExcluding": "6.6.59", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E4486B12-007B-4794-9857-F07145637AA1", "versionEndExcluding": "6.11.6", "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"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}