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CVE-2022-49695— igb: fix a use-after-free issue in igb_clean_tx_ring

Quick assessment

Affected

Linux Linux

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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存在资源管理错误漏洞，该漏洞源于igb_clean_tx_ring在XDP模式下存在释放后重用问题。

CVSS 7.8 · High EPSS 0.29% · P21 Updated Aug 05, 2026

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 10

Vendor	Product	Version Range	Status
Linux	Linux	`9cbc948b5a20c9c054d9631099c0426c16da546b< c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66`	affected
		`9cbc948b5a20c9c054d9631099c0426c16da546b< 2af944210dc23d43d8208dafac4df7be7e3c168b`	affected
		`9cbc948b5a20c9c054d9631099c0426c16da546b< 68a0ed06dcd5d3ea732d011c0b83d66e4791f521`	affected
		`9cbc948b5a20c9c054d9631099c0426c16da546b< 3f6a57ee8544ec3982f8a3cbcbf4aea7d47eb9ec`	affected
		`5.10`	affected
		`< 5.10`	unaffected
		`5.10.127≤ 5.10.*`	unaffected
		`5.15.51≤ 5.15.*`	unaffected
… +2 more rows

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I. Basic Information for CVE-2022-49695

Vulnerability Information

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Vulnerability Title

igb: fix a use-after-free issue in igb_clean_tx_ring

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: igb: fix a use-after-free issue in igb_clean_tx_ring Fix the following use-after-free bug in igb_clean_tx_ring routine when the NIC is running in XDP mode. The issue can be triggered redirecting traffic into the igb NIC and then closing the device while the traffic is flowing. [ 73.322719] CPU: 1 PID: 487 Comm: xdp_redirect Not tainted 5.18.3-apu2 #9 [ 73.330639] Hardware name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017 [ 73.337434] RIP: 0010:refcount_warn_saturate+0xa7/0xf0 [ 73.362283] RSP: 0018:ffffc9000081f798 EFLAGS: 00010282 [ 73.367761] RAX: 0000000000000000 RBX: ffffc90000420f80 RCX: 0000000000000000 [ 73.375200] RDX: ffff88811ad22d00 RSI: ffff88811ad171e0 RDI: ffff88811ad171e0 [ 73.382590] RBP: 0000000000000900 R08: ffffffff82298f28 R09: 0000000000000058 [ 73.390008] R10: 0000000000000219 R11: ffffffff82280f40 R12: 0000000000000090 [ 73.397356] R13: ffff888102343a40 R14: ffff88810359e0e4 R15: 0000000000000000 [ 73.404806] FS: 00007ff38d31d740(0000) GS:ffff88811ad00000(0000) knlGS:0000000000000000 [ 73.413129] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.419096] CR2: 000055cff35f13f8 CR3: 0000000106391000 CR4: 00000000000406e0 [ 73.426565] Call Trace: [ 73.429087] <TASK> [ 73.431314] igb_clean_tx_ring+0x43/0x140 [igb] [ 73.436002] igb_down+0x1d7/0x220 [igb] [ 73.439974] __igb_close+0x3c/0x120 [igb] [ 73.444118] igb_xdp+0x10c/0x150 [igb] [ 73.447983] ? igb_pci_sriov_configure+0x70/0x70 [igb] [ 73.453362] dev_xdp_install+0xda/0x110 [ 73.457371] dev_xdp_attach+0x1da/0x550 [ 73.461369] do_setlink+0xfd0/0x10f0 [ 73.465166] ? __nla_validate_parse+0x89/0xc70 [ 73.469714] rtnl_setlink+0x11a/0x1e0 [ 73.473547] rtnetlink_rcv_msg+0x145/0x3d0 [ 73.477709] ? rtnl_calcit.isra.0+0x130/0x130 [ 73.482258] netlink_rcv_skb+0x8d/0x110 [ 73.486229] netlink_unicast+0x230/0x340 [ 73.490317] netlink_sendmsg+0x215/0x470 [ 73.494395] __sys_sendto+0x179/0x190 [ 73.498268] ? move_addr_to_user+0x37/0x70 [ 73.502547] ? __sys_getsockname+0x84/0xe0 [ 73.506853] ? netlink_setsockopt+0x1c1/0x4a0 [ 73.511349] ? __sys_setsockopt+0xc8/0x1d0 [ 73.515636] __x64_sys_sendto+0x20/0x30 [ 73.519603] do_syscall_64+0x3b/0x80 [ 73.523399] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.528712] RIP: 0033:0x7ff38d41f20c [ 73.551866] RSP: 002b:00007fff3b945a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 73.559640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff38d41f20c [ 73.567066] RDX: 0000000000000034 RSI: 00007fff3b945b30 RDI: 0000000000000003 [ 73.574457] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.581852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3b945ab0 [ 73.589179] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fff3b945b30 [ 73.596545] </TASK> [ 73.598842] ---[ end trace 0000000000000000 ]---

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Vulnerability Title

Linux kernel 资源管理错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

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

Vendor	Product	Affected Versions	CPE	Subscribe
Linux	Linux	9cbc948b5a20c9c054d9631099c0426c16da546b ~ c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66	-
Linux	Linux	5.10	-

II. Public POCs for CVE-2022-49695

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2022-49695

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Patches & Fixes for CVE-2022-49695 (4)

https://www.cve.org/CVERecord?id=CVE-2022-49695

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-49201	9.8 CRITICAL	ibmvnic: fix race between xmit and reset
CVE-2022-49407	9.8 CRITICAL	dlm: fix plock invalid read
CVE-2022-49194	9.8 CRITICAL	net: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-49093	9.8 CRITICAL	skbuff: fix coalescing for page_pool fragment recycling
CVE-2022-49149	9.8 CRITICAL	rxrpc: Fix call timer start racing with call destruction
CVE-2022-49094	9.8 CRITICAL	net/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-49362	9.8 CRITICAL	NFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-49356	9.8 CRITICAL	SUNRPC: Trap RDMA segment overflows
CVE-2022-49260	9.8 CRITICAL	crypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-49418	9.8 CRITICAL	NFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-49561	9.8 CRITICAL	netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49280	9.8 CRITICAL	NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49058	9.1 CRITICAL	cifs: potential buffer overflow in handling symlinks
CVE-2022-49479	8.8 HIGH	mt76: fix tx status related use-after-free race on station removal
CVE-2022-49470	8.8 HIGH	Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
CVE-2022-49519	8.8 HIGH	ath10k: skip ath10k_halt during suspend for driver state RESTARTING
CVE-2022-49500	8.8 HIGH	wl1251: dynamically allocate memory used for DMA
CVE-2022-49328	8.8 HIGH	mt76: fix use-after-free by removing a non-RCU wcid pointer
CVE-2022-49535	8.8 HIGH	scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-49111	8.8 HIGH	Bluetooth: Fix use after free in hci_send_acl

Showing top 20 of 706 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux