{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-53365", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53365", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2025-09-17T14:56:53.781Z", "updatedAt": "2026-05-11T19:43:32.333Z", "importedAt": "2026-10-24T01:57:03.413Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "ip6mr: Fix skb_under_panic in ip6mr_cache_report()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nip6mr: Fix skb_under_panic in ip6mr_cache_report()\n\nskbuff: skb_under_panic: text:ffffffff88771f69 len:56 put:-4\n head:ffff88805f86a800 data:ffff887f5f86a850 tail:0x88 end:0x2c0 dev:pim6reg\n ------------[ cut here ]------------\n kernel BUG at net/core/skbuff.c:192!\n invalid opcode: 0000 [#1] PREEMPT SMP KASAN\n CPU: 2 PID: 22968 Comm: kworker/2:11 Not tainted 6.5.0-rc3-00044-g0a8db05b571a #236\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n Workqueue: ipv6_addrconf addrconf_dad_work\n RIP: 0010:skb_panic+0x152/0x1d0\n Call Trace:\n \n skb_push+0xc4/0xe0\n ip6mr_cache_report+0xd69/0x19b0\n reg_vif_xmit+0x406/0x690\n dev_hard_start_xmit+0x17e/0x6e0\n __dev_queue_xmit+0x2d6a/0x3d20\n vlan_dev_hard_start_xmit+0x3ab/0x5c0\n dev_hard_start_xmit+0x17e/0x6e0\n __dev_queue_xmit+0x2d6a/0x3d20\n neigh_connected_output+0x3ed/0x570\n ip6_finish_output2+0x5b5/0x1950\n ip6_finish_output+0x693/0x11c0\n ip6_output+0x24b/0x880\n NF_HOOK.constprop.0+0xfd/0x530\n ndisc_send_skb+0x9db/0x1400\n ndisc_send_rs+0x12a/0x6c0\n addrconf_dad_completed+0x3c9/0xea0\n addrconf_dad_work+0x849/0x1420\n process_one_work+0xa22/0x16e0\n worker_thread+0x679/0x10c0\n ret_from_fork+0x28/0x60\n ret_from_fork_asm+0x11/0x20\n\nWhen setup a vlan device on dev pim6reg, DAD ns packet may sent on reg_vif_xmit().\nreg_vif_xmit()\n ip6mr_cache_report()\n skb_push(skb, -skb_network_offset(pkt));//skb_network_offset(pkt) is 4\nAnd skb_push declared as:\n\tvoid *skb_push(struct sk_buff *skb, unsigned int len);\n\t\tskb->data -= len;\n\t\t//0xffff88805f86a84c - 0xfffffffc = 0xffff887f5f86a850\nskb->data is set to 0xffff887f5f86a850, which is invalid mem addr, lead to skb_push() fails.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "a96d74d1076c82a4cef02c150d9996b21354c78d" }, { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "8382e7ed2d63e6c2daf6881fa091526dc6c879cd" }, { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "0438e60a00d4e335b3c36397dbf26c74b5d13ef0" }, { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "1683124129a4263dd5bce2475bab110e95fa0346" }, { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "1bb54a21f4d9b88442f8c3307c780e2db64417e4" }, { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "691a09eecad97e745b9aa0e3918db46d020bdacb" }, { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "3326c711f18d18fe6e1f5d83d3a7eab07e5a1560" }, { "version": "14fb64e1f449ef6666f1c3a3fa4e13aec669b98d", "status": "affected", "versionType": "git", "lessThan": "30e0191b16e8a58e4620fa3e2839ddc7b9d4281c" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.26", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.26" }, { "version": "4.14.322", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.291", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.253", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.190", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.126", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.45", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.4.10", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.4.*" }, { "version": "6.5", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }