CVE-2024-57802 - Vulnerability Details

- netrom: check buffer length before accessing it

Description

In the Linux kernel, the following vulnerability has been resolved:

netrom: check buffer length before accessing it

Syzkaller reports an uninit value read from ax25cmp when sending raw message
through ieee802154 implementation.

=====================================================
BUG: KMSAN: uninit-value in ax25cmp+0x3a5/0x460 net/ax25/ax25_addr.c:119
ax25cmp+0x3a5/0x460 net/ax25/ax25_addr.c:119
nr_dev_get+0x20e/0x450 net/netrom/nr_route.c:601
nr_route_frame+0x1a2/0xfc0 net/netrom/nr_route.c:774
nr_xmit+0x5a/0x1c0 net/netrom/nr_dev.c:144
__netdev_start_xmit include/linux/netdevice.h:4940 [inline]
netdev_start_xmit include/linux/netdevice.h:4954 [inline]
xmit_one net/core/dev.c:3548 [inline]
dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564
__dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349
dev_queue_xmit include/linux/netdevice.h:3134 [inline]
raw_sendmsg+0x654/0xc10 net/ieee802154/socket.c:299
ieee802154_sock_sendmsg+0x91/0xc0 net/ieee802154/socket.c:96
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584
___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638
__sys_sendmsg net/socket.c:2667 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x307/0x490 net/socket.c:2674
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523
kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560
__alloc_skb+0x318/0x740 net/core/skbuff.c:651
alloc_skb include/linux/skbuff.h:1286 [inline]
alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334
sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2780
sock_alloc_send_skb include/net/sock.h:1884 [inline]
raw_sendmsg+0x36d/0xc10 net/ieee802154/socket.c:282
ieee802154_sock_sendmsg+0x91/0xc0 net/ieee802154/socket.c:96
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584
___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638
__sys_sendmsg net/socket.c:2667 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x307/0x490 net/socket.c:2674
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b

CPU: 0 PID: 5037 Comm: syz-executor166 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
=====================================================

This issue occurs because the skb buffer is too small, and it's actual
allocation is aligned. This hides an actual issue, which is that nr_route_frame
does not validate the buffer size before using it.

Fix this issue by checking skb->len before accessing any fields in skb->data.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Published: 2025-01-15

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 64e9f54a14f2887be8634fb85cd2f13bec18a184
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< cf6befa7c569787f53440274bbed1405fc07738d
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 769e36c2119a51070faf58819c58274f57a088db
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 78a110332ae268d0b005247c3b9a7d703b875c49
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< f647d72245aadce30618f4c8fd3803904418dbec
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 3ba7f80d98d4965349cfcd258dd78418496c1625
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< a4fd163aed2edd967a244499754dec991d8b4c7d

Linux

affected

Version	Status	Constraints
`2.6.12`	affected	—
`0`	unaffected	< 2.6.12
`5.4.289`	unaffected	≤ 5.4.*
`5.10.233`	unaffected	≤ 5.10.*
`5.15.176`	unaffected	≤ 5.15.*
`6.1.124`	unaffected	≤ 6.1.*
`6.6.70`	unaffected	≤ 6.6.*
`6.12.9`	unaffected	≤ 6.12.*
`6.13`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc5::::::

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DLA	DLA-4075-1	linux security update
Debian DLA	DLA-4076-1	linux-6.1 security update
EUVD	EUVD-2024-53759	In the Linux kernel, the following vulnerability has been resolved: netrom: check buffer length before accessing it Syzkaller reports an uninit value read from ax25cmp when sending raw message through ieee802154 implementation. ===================================================== BUG: KMSAN: uninit-value in ax25cmp+0x3a5/0x460 net/ax25/ax25_addr.c:119 ax25cmp+0x3a5/0x460 net/ax25/ax25_addr.c:119 nr_dev_get+0x20e/0x450 net/netrom/nr_route.c:601 nr_route_frame+0x1a2/0xfc0 net/netrom/nr_route.c:774 nr_xmit+0x5a/0x1c0 net/netrom/nr_dev.c:144 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3548 [inline] dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564 __dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349 dev_queue_xmit include/linux/netdevice.h:3134 [inline] raw_sendmsg+0x654/0xc10 net/ieee802154/socket.c:299 ieee802154_sock_sendmsg+0x91/0xc0 net/ieee802154/socket.c:96 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x318/0x740 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334 sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2780 sock_alloc_send_skb include/net/sock.h:1884 [inline] raw_sendmsg+0x36d/0xc10 net/ieee802154/socket.c:282 ieee802154_sock_sendmsg+0x91/0xc0 net/ieee802154/socket.c:96 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 0 PID: 5037 Comm: syz-executor166 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ===================================================== This issue occurs because the skb buffer is too small, and it's actual allocation is aligned. This hides an actual issue, which is that nr_route_frame does not validate the buffer size before using it. Fix this issue by checking skb->len before accessing any fields in skb->data. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Ubuntu USN	USN-7379-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7379-2	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-7380-1	Linux kernel (Low Latency) vulnerabilities
Ubuntu USN	USN-7381-1	Linux kernel (Low Latency) vulnerabilities
Ubuntu USN	USN-7382-1	Linux kernel (OEM) vulnerabilities
Ubuntu USN	USN-7387-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7387-2	Linux kernel (FIPS) vulnerabilities
Ubuntu USN	USN-7387-3	Linux kernel (Real-time) vulnerabilities
Ubuntu USN	USN-7388-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7389-1	Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN	USN-7390-1	Linux kernel (Xilinx ZynqMP) vulnerabilities
Ubuntu USN	USN-7391-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7392-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7392-2	Linux kernel vulnerabilities
Ubuntu USN	USN-7392-3	Linux kernel (AWS) vulnerabilities
Ubuntu USN	USN-7392-4	Linux kernel (AWS FIPS) vulnerabilities
Ubuntu USN	USN-7393-1	Linux kernel (FIPS) vulnerabilities
Ubuntu USN	USN-7401-1	Linux kernel (AWS) vulnerabilities
Ubuntu USN	USN-7407-1	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-7413-1	Linux kernel (IoT) vulnerabilities
Ubuntu USN	USN-7421-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-7458-1	Linux kernel (IBM) vulnerabilities
Ubuntu USN	USN-7459-1	Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN	USN-7459-2	Linux kernel (GCP) vulnerabilities
Ubuntu USN	USN-7463-1	Linux kernel (IBM) vulnerabilities
Ubuntu USN	USN-7513-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7513-2	Linux kernel (Real-time) vulnerabilities
Ubuntu USN	USN-7513-3	Linux kernel vulnerabilities
Ubuntu USN	USN-7513-4	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-7513-5	Linux kernel (Oracle) vulnerabilities
Ubuntu USN	USN-7514-1	Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN	USN-7515-1	Linux kernel (GKE) vulnerabilities
Ubuntu USN	USN-7515-2	Linux kernel vulnerabilities
Ubuntu USN	USN-7522-1	Linux kernel (Azure, N-Series) vulnerabilities
Ubuntu USN	USN-7523-1	Linux kernel (Raspberry Pi Real-time) vulnerabilities
Ubuntu USN	USN-7524-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-7539-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-7540-1	Linux kernel (Raspberry Pi) vulnerabilities

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00007.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://git.kernel.org/stable/c/3ba7f80d98d4965349cfcd258dd78418496c1625
https://git.kernel.org/stable/c/64e9f54a14f2887be8634fb85cd2f13bec18a184
https://git.kernel.org/stable/c/769e36c2119a51070faf58819c58274f57a088db
https://git.kernel.org/stable/c/78a110332ae268d0b005247c3b9a7d703b875c49
https://git.kernel.org/stable/c/a4fd163aed2edd967a244499754dec991d8b4c7d
https://git.kernel.org/stable/c/cf6befa7c569787f53440274bbed1405fc07738d
https://git.kernel.org/stable/c/f647d72245aadce30618f4c8fd3803904418dbec
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
https://lore.kernel.org/linux-cve-announce/2025011533-CVE-2024-57802-c728@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-57802
https://www.cve.org/CVERecord?id=CVE-2024-57802

History

Mon, 03 Nov 2025 21:30:00 +0000

Type	Values Removed	Values Added
References		https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Wed, 01 Oct 2025 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 21 Jan 2025 17:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
Weaknesses		CWE-908
CPEs		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:6.13:rc1:::::: cpe:2.3:o:linux:linux_kernel:6.13:rc2:::::: cpe:2.3:o:linux:linux_kernel:6.13:rc3:::::: cpe:2.3:o:linux:linux_kernel:6.13:rc4:::::: cpe:2.3:o:linux:linux_kernel:6.13:rc5::::::
Vendors & Products		Linux Linux linux Kernel

Thu, 16 Jan 2025 01:30:00 +0000

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2025011533-CVE-2024-57802-c728@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2024-57802 https://www.cve.org/CVERecord?id=CVE-2024-57802
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Wed, 15 Jan 2025 13:15:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: netrom: check buffer length before accessing it Syzkaller reports an uninit value read from ax25cmp when sending raw message through ieee802154 implementation. ===================================================== BUG: KMSAN: uninit-value in ax25cmp+0x3a5/0x460 net/ax25/ax25_addr.c:119 ax25cmp+0x3a5/0x460 net/ax25/ax25_addr.c:119 nr_dev_get+0x20e/0x450 net/netrom/nr_route.c:601 nr_route_frame+0x1a2/0xfc0 net/netrom/nr_route.c:774 nr_xmit+0x5a/0x1c0 net/netrom/nr_dev.c:144 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3548 [inline] dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564 __dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349 dev_queue_xmit include/linux/netdevice.h:3134 [inline] raw_sendmsg+0x654/0xc10 net/ieee802154/socket.c:299 ieee802154_sock_sendmsg+0x91/0xc0 net/ieee802154/socket.c:96 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x318/0x740 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334 sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2780 sock_alloc_send_skb include/net/sock.h:1884 [inline] raw_sendmsg+0x36d/0xc10 net/ieee802154/socket.c:282 ieee802154_sock_sendmsg+0x91/0xc0 net/ieee802154/socket.c:96 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 0 PID: 5037 Comm: syz-executor166 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ===================================================== This issue occurs because the skb buffer is too small, and it's actual allocation is aligned. This hides an actual issue, which is that nr_route_frame does not validate the buffer size before using it. Fix this issue by checking skb->len before accessing any fields in skb->data. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Title		netrom: check buffer length before accessing it
References		https://git.kernel.org/stable/c/3ba7f80d98d4965349cfcd258dd78418496c1625 https://git.kernel.org/stable/c/64e9f54a14f2887be8634fb85cd2f13bec18a184 https://git.kernel.org/stable/c/769e36c2119a51070faf58819c58274f57a088db https://git.kernel.org/stable/c/78a110332ae268d0b005247c3b9a7d703b875c49 https://git.kernel.org/stable/c/a4fd163aed2edd967a244499754dec991d8b4c7d https://git.kernel.org/stable/c/cf6befa7c569787f53440274bbed1405fc07738d https://git.kernel.org/stable/c/f647d72245aadce30618f4c8fd3803904418dbec

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-01-15T13:10:25.685Z

Updated: 2026-05-11T20:59:14.130Z

Reserved: 2025-01-15T13:08:59.709Z

Link: CVE-2024-57802

Vulnrichment

Updated: 2025-11-03T20:54:35.577Z

NVD

Status : Modified

Published: 2025-01-15T13:15:11.853

Modified: 2025-11-03T21:18:34.287

Link: CVE-2024-57802

Redhat

Severity : Moderate

Publid Date: 2025-01-15T00:00:00Z

Links: CVE-2024-57802 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

CWE-908

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

JSON object

JSON object

JSON object

JSON object

JSON object