{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-50310", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-15T14:18:36.813Z", "datePublished": "2025-09-15T14:46:05.486Z", "dateUpdated": "2025-09-15T14:46:05.486Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-15T14:46:05.486Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed\n\nIf the initialization fails in calling addrconf_init_net(), devconf_all is\nthe pointer that has been released. Then ip6mr_sk_done() is called to\nrelease the net, accessing devconf->mc_forwarding directly causes invalid\npointer access.\n\nThe process is as follows:\nsetup_net()\n\tops_init()\n\t\taddrconf_init_net()\n\t\tall = kmemdup(...) ---> alloc \"all\"\n\t\t...\n\t\tnet->ipv6.devconf_all = all;\n\t\t__addrconf_sysctl_register() ---> failed\n\t\t...\n\t\tkfree(all); ---> ipv6.devconf_all invalid\n\t\t...\n\tops_exit_list()\n\t\t...\n\t\tip6mr_sk_done()\n\t\t\tdevconf = net->ipv6.devconf_all;\n\t\t\t//devconf is invalid pointer\n\t\t\tif (!devconf || !atomic_read(&devconf->mc_forwarding))\n\nThe following is the Call Trace information:\nBUG: KASAN: use-after-free in ip6mr_sk_done+0x112/0x3a0\nRead of size 4 at addr ffff888075508e88 by task ip/14554\nCall Trace:\n<TASK>\ndump_stack_lvl+0x8e/0xd1\nprint_report+0x155/0x454\nkasan_report+0xba/0x1f0\nkasan_check_range+0x35/0x1b0\nip6mr_sk_done+0x112/0x3a0\nrawv6_close+0x48/0x70\ninet_release+0x109/0x230\ninet6_release+0x4c/0x70\nsock_release+0x87/0x1b0\nigmp6_net_exit+0x6b/0x170\nops_exit_list+0xb0/0x170\nsetup_net+0x7ac/0xbd0\ncopy_net_ns+0x2e6/0x6b0\ncreate_new_namespaces+0x382/0xa50\nunshare_nsproxy_namespaces+0xa6/0x1c0\nksys_unshare+0x3a4/0x7e0\n__x64_sys_unshare+0x2d/0x40\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0\nRIP: 0033:0x7f7963322547\n\n</TASK>\nAllocated by task 14554:\nkasan_save_stack+0x1e/0x40\nkasan_set_track+0x21/0x30\n__kasan_kmalloc+0xa1/0xb0\n__kmalloc_node_track_caller+0x4a/0xb0\nkmemdup+0x28/0x60\naddrconf_init_net+0x1be/0x840\nops_init+0xa5/0x410\nsetup_net+0x5aa/0xbd0\ncopy_net_ns+0x2e6/0x6b0\ncreate_new_namespaces+0x382/0xa50\nunshare_nsproxy_namespaces+0xa6/0x1c0\nksys_unshare+0x3a4/0x7e0\n__x64_sys_unshare+0x2d/0x40\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nFreed by task 14554:\nkasan_save_stack+0x1e/0x40\nkasan_set_track+0x21/0x30\nkasan_save_free_info+0x2a/0x40\n____kasan_slab_free+0x155/0x1b0\nslab_free_freelist_hook+0x11b/0x220\n__kmem_cache_free+0xa4/0x360\naddrconf_init_net+0x623/0x840\nops_init+0xa5/0x410\nsetup_net+0x5aa/0xbd0\ncopy_net_ns+0x2e6/0x6b0\ncreate_new_namespaces+0x382/0xa50\nunshare_nsproxy_namespaces+0xa6/0x1c0\nksys_unshare+0x3a4/0x7e0\n__x64_sys_unshare+0x2d/0x40\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0"}], "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": "7d9b1b578d67a14ae7a7a526ee115b233fa264c4", "lessThan": "22a68c3b9362eaac7b035eba09e95e6b3f7a912c", "status": "affected", "versionType": "git"}, {"version": "7d9b1b578d67a14ae7a7a526ee115b233fa264c4", "lessThan": "1ca695207ed2271ecbf8ee6c641970f621c157cc", "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": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.6", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.0.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/22a68c3b9362eaac7b035eba09e95e6b3f7a912c"}, {"url": "https://git.kernel.org/stable/c/1ca695207ed2271ecbf8ee6c641970f621c157cc"}], "title": "ip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed\n\nIf the initialization fails in calling addrconf_init_net(), devconf_all is\nthe pointer that has been released. Then ip6mr_sk_done() is called to\nrelease the net, accessing devconf->mc_forwarding directly causes invalid\npointer access.\n\nThe process is as follows:\nsetup_net()\n\tops_init()\n\t\taddrconf_init_net()\n\t\tall = kmemdup(...) ---> alloc \"all\"\n\t\t...\n\t\tnet->ipv6.devconf_all = all;\n\t\t__addrconf_sysctl_register() ---> failed\n\t\t...\n\t\tkfree(all); ---> ipv6.devconf_all invalid\n\t\t...\n\tops_exit_list()\n\t\t...\n\t\tip6mr_sk_done()\n\t\t\tdevconf = net->ipv6.devconf_all;\n\t\t\t//devconf is invalid pointer\n\t\t\tif (!devconf || !atomic_read(&devconf->mc_forwarding))\n\nThe following is the Call Trace information:\nBUG: KASAN: use-after-free in ip6mr_sk_done+0x112/0x3a0\nRead of size 4 at addr ffff888075508e88 by task ip/14554\nCall Trace:\n<TASK>\ndump_stack_lvl+0x8e/0xd1\nprint_report+0x155/0x454\nkasan_report+0xba/0x1f0\nkasan_check_range+0x35/0x1b0\nip6mr_sk_done+0x112/0x3a0\nrawv6_close+0x48/0x70\ninet_release+0x109/0x230\ninet6_release+0x4c/0x70\nsock_release+0x87/0x1b0\nigmp6_net_exit+0x6b/0x170\nops_exit_list+0xb0/0x170\nsetup_net+0x7ac/0xbd0\ncopy_net_ns+0x2e6/0x6b0\ncreate_new_namespaces+0x382/0xa50\nunshare_nsproxy_namespaces+0xa6/0x1c0\nksys_unshare+0x3a4/0x7e0\n__x64_sys_unshare+0x2d/0x40\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0\nRIP: 0033:0x7f7963322547\n\n</TASK>\nAllocated by task 14554:\nkasan_save_stack+0x1e/0x40\nkasan_set_track+0x21/0x30\n__kasan_kmalloc+0xa1/0xb0\n__kmalloc_node_track_caller+0x4a/0xb0\nkmemdup+0x28/0x60\naddrconf_init_net+0x1be/0x840\nops_init+0xa5/0x410\nsetup_net+0x5aa/0xbd0\ncopy_net_ns+0x2e6/0x6b0\ncreate_new_namespaces+0x382/0xa50\nunshare_nsproxy_namespaces+0xa6/0x1c0\nksys_unshare+0x3a4/0x7e0\n__x64_sys_unshare+0x2d/0x40\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nFreed by task 14554:\nkasan_save_stack+0x1e/0x40\nkasan_set_track+0x21/0x30\nkasan_save_free_info+0x2a/0x40\n____kasan_slab_free+0x155/0x1b0\nslab_free_freelist_hook+0x11b/0x220\n__kmem_cache_free+0xa4/0x360\naddrconf_init_net+0x623/0x840\nops_init+0xa5/0x410\nsetup_net+0x5aa/0xbd0\ncopy_net_ns+0x2e6/0x6b0\ncreate_new_namespaces+0x382/0xa50\nunshare_nsproxy_namespaces+0xa6/0x1c0\nksys_unshare+0x3a4/0x7e0\n__x64_sys_unshare+0x2d/0x40\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0"}], "id": "CVE-2022-50310", "lastModified": "2025-09-15T15:22:27.090", "metrics": {}, "published": "2025-09-15T15:15:42.750", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ca695207ed2271ecbf8ee6c641970f621c157cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/22a68c3b9362eaac7b035eba09e95e6b3f7a912c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed", "id": "2395340", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395340"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2022-50310", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "2025-09-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50310\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50310\nhttps://lore.kernel.org/linux-cve-announce/2025091559-CVE-2022-50310-aa10@gregkh/T"], "threat_severity": "Important"}