CVE-2023-53365

Advisory lineage Upstream: 0 Downstream: 32
Modified
Published: 17 Sept 2025, 14:56
Last modified:11 May 2026, 19:43

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Sept 2025, 14:56
Published
Vulnerability first disclosed
11 May 2026, 19:43
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 6%

Affected Systems

  • linux•linux

    ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < a96d74d1076c82a4cef02c150d9996b21354c78d | ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < 8382e7ed2d63e6c2daf6881fa091526dc6c879cd | ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < 0438e60a00d4e335b3c36397dbf26c74b5d13ef0 | ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < 1683124129a4263dd5bce2475bab110e95fa0346 | ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < 1bb54a21f4d9b88442f8c3307c780e2db64417e4 | ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < 691a09eecad97e745b9aa0e3918db46d020bdacb | ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < 3326c711f18d18fe6e1f5d83d3a7eab07e5a1560 | ≥ 14fb64e1f449ef6666f1c3a3fa4e13aec669b98d, < 30e0191b16e8a58e4620fa3e2839ddc7b9d4281c | 2.6.26

  • linux•linux_kernel

    ≥ 2.6.26, < 4.14.322 | ≥ 4.15, < 4.19.291 | ≥ 4.20, < 5.4.253 | ≥ 5.5, < 5.10.190 | ≥ 5.11, < 5.15.126 | ≥ 5.16, < 6.1.45 | ≥ 6.2, < 6.4.10 | 6.5:rc1 | 6.5:rc2 | 6.5:rc3 | 6.5:rc4

References (8)