CVE-2023-53365— ip6mr: Fix skb_under_panic in ip6mr_cache_report()
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I. Basic Information for CVE-2023-53365
Vulnerability Information
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Vulnerability Title
ip6mr: Fix skb_under_panic in ip6mr_cache_report()
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ip6mr_cache_report函数中存在skb_under_panic问题，可能导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-53365
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Same Patch Batch · Linux · 2025-09-17 · 56 CVEs total
| CVE-2022-50370 | i2c: designware: Fix handling of real but unexpected device interrupts | |
| CVE-2022-50355 | staging: vt6655: fix some erroneous memory clean-up loops | |
| CVE-2022-50358 | brcmfmac: return error when getting invalid max_flowrings from dongle | |
| CVE-2022-50356 | net: sched: sfb: fix null pointer access issue when sfb_init() fails | |
| CVE-2022-50357 | usb: dwc3: core: fix some leaks in probe | |
| CVE-2022-50359 | media: cx88: Fix a null-ptr-deref bug in buffer_prepare() | |
| CVE-2022-50354 | drm/amdkfd: Fix kfd_process_device_init_vm error handling | |
| CVE-2022-50367 | fs: fix UAF/GPF bug in nilfs_mdt_destroy | |
| CVE-2022-50368 | drm/msm/dsi: fix memory corruption with too many bridges | |
| CVE-2022-50369 | drm/vkms: Fix null-ptr-deref in vkms_release() | |
| CVE-2022-50366 | powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue | |
| CVE-2022-50371 | led: qcom-lpg: Fix sleeping in atomic | |
| CVE-2022-50372 | cifs: Fix memory leak when build ntlmssp negotiate blob failed | |
| CVE-2022-50373 | fs: dlm: fix race in lowcomms | |
| CVE-2022-50374 | Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure | |
| CVE-2023-53335 | RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish() | |
| CVE-2023-53336 | media: ipu-bridge: Fix null pointer deref on SSDB/PLD parsing warnings | |
| CVE-2023-53337 | nilfs2: do not write dirty data after degenerating to read-only | |
| CVE-2023-53338 | lwt: Fix return values of BPF xmit ops | |
| CVE-2023-53339 | btrfs: fix BUG_ON condition in btrfs_cancel_balance |
Showing top 20 of 56 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
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scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
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