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CVE-2022-49401— mm/page_owner: use strscpy() instead of strlcpy()

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存在安全漏洞，该漏洞源于mm/page_owner使用strlcpy()而非strscpy()。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.26% · P17 Updated May 13, 2026

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 6

Vendor	Product	Version Range	Status
Linux	Linux	`865ed6a3278654ce4a55eb74c5283eeb82ad4699< 5cd9900a1ac8b0a4ff3cd97d4d77b7711be435bf`	affected
		`865ed6a3278654ce4a55eb74c5283eeb82ad4699< cd8c1fd8cdd14158f2d8bea2d1bfe8015dccfa3a`	affected
		`5.18`	affected
		`< 5.18`	unaffected
		`5.18.3≤ 5.18.*`	unaffected
		`5.19≤ *`	unaffected

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I. Basic Information for CVE-2022-49401

Vulnerability Information

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Vulnerability Title

mm/page_owner: use strscpy() instead of strlcpy()

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: mm/page_owner: use strscpy() instead of strlcpy() current->comm[] is not a string (no guarantee for a zero byte in it). strlcpy(s1, s2, l) is calling strlen(s2), potentially causing out-of-bound access, as reported by syzbot: detected buffer overflow in __fortify_strlen ------------[ cut here ]------------ kernel BUG at lib/string_helpers.c:980! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4087 Comm: dhcpcd-run-hooks Not tainted 5.18.0-rc3-syzkaller-01537-g20b87e7c29df #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:fortify_panic+0x18/0x1a lib/string_helpers.c:980 Code: 8c e8 c5 ba e1 fa e9 23 0f bf fa e8 0b 5d 8c f8 eb db 55 48 89 fd e8 e0 49 40 f8 48 89 ee 48 c7 c7 80 f5 26 8a e8 99 09 f1 ff <0f> 0b e8 ca 49 40 f8 48 8b 54 24 18 4c 89 f1 48 c7 c7 00 00 27 8a RSP: 0018:ffffc900000074a8 EFLAGS: 00010286 RAX: 000000000000002c RBX: ffff88801226b728 RCX: 0000000000000000 RDX: ffff8880198e0000 RSI: ffffffff81600458 RDI: fffff52000000e87 RBP: ffffffff89da2aa0 R08: 000000000000002c R09: 0000000000000000 R10: ffffffff815fae2e R11: 0000000000000000 R12: ffff88801226b700 R13: ffff8880198e0830 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5876ad6ff8 CR3: 000000001a48c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: <IRQ> __fortify_strlen include/linux/fortify-string.h:128 [inline] strlcpy include/linux/fortify-string.h:143 [inline] __set_page_owner_handle+0x2b1/0x3e0 mm/page_owner.c:171 __set_page_owner+0x3e/0x50 mm/page_owner.c:190 prep_new_page mm/page_alloc.c:2441 [inline] get_page_from_freelist+0xba2/0x3e00 mm/page_alloc.c:4182 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5408 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272 alloc_slab_page mm/slub.c:1799 [inline] allocate_slab+0x26c/0x3c0 mm/slub.c:1944 new_slab mm/slub.c:2004 [inline] ___slab_alloc+0x8df/0xf20 mm/slub.c:3005 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3092 slab_alloc_node mm/slub.c:3183 [inline] slab_alloc mm/slub.c:3225 [inline] __kmem_cache_alloc_lru mm/slub.c:3232 [inline] kmem_cache_alloc+0x360/0x3b0 mm/slub.c:3242 dst_alloc+0x146/0x1f0 net/core/dst.c:92

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

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mm/page_owner使用strlcpy()而非strscpy()。

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	865ed6a3278654ce4a55eb74c5283eeb82ad4699 ~ 5cd9900a1ac8b0a4ff3cd97d4d77b7711be435bf	-
Linux	Linux	5.18	-

II. Public POCs for CVE-2022-49401

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2022-49401

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Patches & Fixes for CVE-2022-49401 (2)

https://www.cve.org/CVERecord?id=CVE-2022-49401

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

CVE-2022-49561	9.8 CRITICAL	netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49149	9.8 CRITICAL	rxrpc: Fix call timer start racing with call destruction
CVE-2022-49407	9.8 CRITICAL	dlm: fix plock invalid read
CVE-2022-49362	9.8 CRITICAL	NFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-49201	9.8 CRITICAL	ibmvnic: fix race between xmit and reset
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-2022-49260	9.8 CRITICAL	crypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-49094	9.8 CRITICAL	net/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-49418	9.8 CRITICAL	NFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-49280	9.8 CRITICAL	NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49356	9.8 CRITICAL	SUNRPC: Trap RDMA segment overflows
CVE-2022-49058	9.1 CRITICAL	cifs: potential buffer overflow in handling symlinks
CVE-2022-49500	8.8 HIGH	wl1251: dynamically allocate memory used for DMA
CVE-2022-49470	8.8 HIGH	Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
CVE-2022-49114	8.8 HIGH	scsi: libfc: Fix use after free in fc_exch_abts_resp()
CVE-2022-49535	8.8 HIGH	scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-49471	8.8 HIGH	rtw89: cfo: check mac_id to avoid out-of-bounds
CVE-2022-49111	8.8 HIGH	Bluetooth: Fix use after free in hci_send_acl
CVE-2022-49519	8.8 HIGH	ath10k: skip ath10k_halt during suspend for driver state RESTARTING

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

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

V. Comments for CVE-2022-49401

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2022-49401— mm/page_owner: use strscpy() instead of strlcpy()

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 6

I. Basic Information for CVE-2022-49401

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2022-49401

III. Intelligence Information for CVE-2022-49401

Patches & Fixes for CVE-2022-49401 (2)

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

IV. Related Vulnerabilities

V. Comments for CVE-2022-49401

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