CVE-2023-53365 (GCVE-0-2023-53365)

Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-01-14 18:53
VLAI?
Title
ip6mr: Fix skb_under_panic in ip6mr_cache_report()
Summary
In the Linux kernel, the following vulnerability has been resolved: ip6mr: Fix skb_under_panic in ip6mr_cache_report() skbuff: skb_under_panic: text:ffffffff88771f69 len:56 put:-4 head:ffff88805f86a800 data:ffff887f5f86a850 tail:0x88 end:0x2c0 dev:pim6reg ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:192! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 2 PID: 22968 Comm: kworker/2:11 Not tainted 6.5.0-rc3-00044-g0a8db05b571a #236 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:skb_panic+0x152/0x1d0 Call Trace: <TASK> skb_push+0xc4/0xe0 ip6mr_cache_report+0xd69/0x19b0 reg_vif_xmit+0x406/0x690 dev_hard_start_xmit+0x17e/0x6e0 __dev_queue_xmit+0x2d6a/0x3d20 vlan_dev_hard_start_xmit+0x3ab/0x5c0 dev_hard_start_xmit+0x17e/0x6e0 __dev_queue_xmit+0x2d6a/0x3d20 neigh_connected_output+0x3ed/0x570 ip6_finish_output2+0x5b5/0x1950 ip6_finish_output+0x693/0x11c0 ip6_output+0x24b/0x880 NF_HOOK.constprop.0+0xfd/0x530 ndisc_send_skb+0x9db/0x1400 ndisc_send_rs+0x12a/0x6c0 addrconf_dad_completed+0x3c9/0xea0 addrconf_dad_work+0x849/0x1420 process_one_work+0xa22/0x16e0 worker_thread+0x679/0x10c0 ret_from_fork+0x28/0x60 ret_from_fork_asm+0x11/0x20 When setup a vlan device on dev pim6reg, DAD ns packet may sent on reg_vif_xmit(). reg_vif_xmit() ip6mr_cache_report() skb_push(skb, -skb_network_offset(pkt));//skb_network_offset(pkt) is 4 And skb_push declared as: void *skb_push(struct sk_buff *skb, unsigned int len); skb->data -= len; //0xffff88805f86a84c - 0xfffffffc = 0xffff887f5f86a850 skb->data is set to 0xffff887f5f86a850, which is invalid mem addr, lead to skb_push() fails.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < a96d74d1076c82a4cef02c150d9996b21354c78d (git)
Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < 8382e7ed2d63e6c2daf6881fa091526dc6c879cd (git)
Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < 0438e60a00d4e335b3c36397dbf26c74b5d13ef0 (git)
Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < 1683124129a4263dd5bce2475bab110e95fa0346 (git)
Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < 1bb54a21f4d9b88442f8c3307c780e2db64417e4 (git)
Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < 691a09eecad97e745b9aa0e3918db46d020bdacb (git)
Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < 3326c711f18d18fe6e1f5d83d3a7eab07e5a1560 (git)
Affected: 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d , < 30e0191b16e8a58e4620fa3e2839ddc7b9d4281c (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.26
Unaffected: 0 , < 2.6.26 (semver)
Unaffected: 4.14.322 , ≤ 4.14.* (semver)
Unaffected: 4.19.291 , ≤ 4.19.* (semver)
Unaffected: 5.4.253 , ≤ 5.4.* (semver)
Unaffected: 5.10.190 , ≤ 5.10.* (semver)
Unaffected: 5.15.126 , ≤ 5.15.* (semver)
Unaffected: 6.1.45 , ≤ 6.1.* (semver)
Unaffected: 6.4.10 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "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  \u003cTASK\u003e\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-\u003edata -= len;\n\t\t//0xffff88805f86a84c - 0xfffffffc = 0xffff887f5f86a850\nskb-\u003edata is set to 0xffff887f5f86a850, which is invalid mem addr, lead to skb_push() fails."
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        "dateUpdated": "2025-09-17T14:56:53.781Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/a96d74d1076c82a4cef02c150d9996b21354c78d"
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          "url": "https://git.kernel.org/stable/c/8382e7ed2d63e6c2daf6881fa091526dc6c879cd"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53365",
    "datePublished": "2025-09-17T14:56:53.781Z",
    "dateReserved": "2025-09-17T14:54:09.733Z",
    "dateUpdated": "2026-01-14T18:53:01.715Z",
    "state": "PUBLISHED"
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      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-17T14:56:53.781Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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  \u003cTASK\u003e\\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-\u003edata -= len;\\n\\t\\t//0xffff88805f86a84c - 0xfffffffc = 0xffff887f5f86a850\\nskb-\u003edata is set to 0xffff887f5f86a850, which is invalid mem addr, lead to skb_push() fails.\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"net/ipv6/ip6mr.c\"], \"versions\": [{\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"a96d74d1076c82a4cef02c150d9996b21354c78d\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"8382e7ed2d63e6c2daf6881fa091526dc6c879cd\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"0438e60a00d4e335b3c36397dbf26c74b5d13ef0\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"1683124129a4263dd5bce2475bab110e95fa0346\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"1bb54a21f4d9b88442f8c3307c780e2db64417e4\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"691a09eecad97e745b9aa0e3918db46d020bdacb\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"3326c711f18d18fe6e1f5d83d3a7eab07e5a1560\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"14fb64e1f449ef6666f1c3a3fa4e13aec669b98d\", \"lessThan\": \"30e0191b16e8a58e4620fa3e2839ddc7b9d4281c\", \"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/ip6mr.c\"], \"versions\": [{\"version\": \"2.6.26\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"2.6.26\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"4.14.322\", \"lessThanOrEqual\": \"4.14.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"4.19.291\", \"lessThanOrEqual\": \"4.19.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.4.253\", \"lessThanOrEqual\": \"5.4.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.10.190\", \"lessThanOrEqual\": \"5.10.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.15.126\", \"lessThanOrEqual\": \"5.15.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.1.45\", \"lessThanOrEqual\": \"6.1.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.4.10\", \"lessThanOrEqual\": \"6.4.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.5\", \"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\": \"2.6.26\", \"versionEndExcluding\": \"4.14.322\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.26\", \"versionEndExcluding\": \"4.19.291\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.26\", \"versionEndExcluding\": \"5.4.253\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.26\", \"versionEndExcluding\": \"5.10.190\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.26\", \"versionEndExcluding\": \"5.15.126\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.26\", \"versionEndExcluding\": \"6.1.45\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.26\", \"versionEndExcluding\": \"6.4.10\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.26\", \"versionEndExcluding\": \"6.5\"}]}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a96d74d1076c82a4cef02c150d9996b21354c78d\"}, {\"url\": \"https://git.kernel.org/stable/c/8382e7ed2d63e6c2daf6881fa091526dc6c879cd\"}, {\"url\": \"https://git.kernel.org/stable/c/0438e60a00d4e335b3c36397dbf26c74b5d13ef0\"}, {\"url\": \"https://git.kernel.org/stable/c/1683124129a4263dd5bce2475bab110e95fa0346\"}, {\"url\": \"https://git.kernel.org/stable/c/1bb54a21f4d9b88442f8c3307c780e2db64417e4\"}, {\"url\": \"https://git.kernel.org/stable/c/691a09eecad97e745b9aa0e3918db46d020bdacb\"}, {\"url\": \"https://git.kernel.org/stable/c/3326c711f18d18fe6e1f5d83d3a7eab07e5a1560\"}, {\"url\": \"https://git.kernel.org/stable/c/30e0191b16e8a58e4620fa3e2839ddc7b9d4281c\"}], \"title\": \"ip6mr: Fix skb_under_panic in ip6mr_cache_report()\", \"x_generator\": {\"engine\": \"bippy-1.2.0\"}}, \"adp\": [{\"metrics\": [{\"cvssV3_1\": {\"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:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53365\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:45:20.470480Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-01-14T18:45:16.486Z\"}, \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53365\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2025-09-17T14:54:09.733Z\", \"datePublished\": \"2025-09-17T14:56:53.781Z\", \"dateUpdated\": \"2025-09-17T14:56:53.781Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.