7.7
HIGH
CVE-2022-48651
Linux IPvlan Out-of-Bounds Buffer Access Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: ipvlan: Fix out-of-bound bugs caused by unset skb->mac_header If an AF_PACKET socket is used to send packets through ipvlan and the default xmit function of the AF_PACKET socket is changed from dev_queue_xmit() to packet_direct_xmit() via setsockopt() with the option name of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset and remains as the initial value of 65535, this may trigger slab-out-of-bounds bugs as following: ================================================================= UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6 ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 all Trace: print_address_description.constprop.0+0x1d/0x160 print_report.cold+0x4f/0x112 kasan_report+0xa3/0x130 ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] ipvlan_start_xmit+0x29/0xa0 [ipvlan] __dev_direct_xmit+0x2e2/0x380 packet_direct_xmit+0x22/0x60 packet_snd+0x7c9/0xc40 sock_sendmsg+0x9a/0xa0 __sys_sendto+0x18a/0x230 __x64_sys_sendto+0x74/0x90 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd The root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn't reset skb->mac_header as dev_queue_xmit() In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() is called. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() which use "skb->head + skb->mac_header", out-of-bound access occurs. This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2() and reset mac header in multicast to solve this out-of-bound bug.

INFO

Published Date :

April 28, 2024, 1:15 p.m.

Last Modified :

March 20, 2025, 9:33 p.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

5.2

Exploitability Score :

2.5
Affected Products

The following products are affected by CVE-2022-48651 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-48651 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2022-48651 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Mar. 20, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.19 up to (excluding) 4.9.330 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.295 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.260 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.215 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.146 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.71 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.19.12
    Added Reference Type CVE: https://git.kernel.org/stable/c/25efdbe5fe542c3063d1948cc4e98abcb57621ca Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/25efdbe5fe542c3063d1948cc4e98abcb57621ca Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/346e94aa4a99378592c46d6a34c72703a32bd5be Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/346e94aa4a99378592c46d6a34c72703a32bd5be Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/81225b2ea161af48e093f58e8dfee6d705b16af4 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/81225b2ea161af48e093f58e8dfee6d705b16af4 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/8d06006c7eb75587d986da46c48ba9274f94e8e7 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/8d06006c7eb75587d986da46c48ba9274f94e8e7 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/ab4a733874ead120691e8038272d22f8444d3638 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/ab4a733874ead120691e8038272d22f8444d3638 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/b583e6b25bf9321c91154f6c78d2173ef12c4241 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/b583e6b25bf9321c91154f6c78d2173ef12c4241 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/bffcdade259c05ab3436b5fab711612093c275ef Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/bffcdade259c05ab3436b5fab711612093c275ef Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/e2b46cd5796f083e452fbc624f65b80328b0c1a4 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/e2b46cd5796f083e452fbc624f65b80328b0c1a4 Types: Patch
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/25efdbe5fe542c3063d1948cc4e98abcb57621ca
    Added Reference https://git.kernel.org/stable/c/346e94aa4a99378592c46d6a34c72703a32bd5be
    Added Reference https://git.kernel.org/stable/c/81225b2ea161af48e093f58e8dfee6d705b16af4
    Added Reference https://git.kernel.org/stable/c/8d06006c7eb75587d986da46c48ba9274f94e8e7
    Added Reference https://git.kernel.org/stable/c/ab4a733874ead120691e8038272d22f8444d3638
    Added Reference https://git.kernel.org/stable/c/b583e6b25bf9321c91154f6c78d2173ef12c4241
    Added Reference https://git.kernel.org/stable/c/bffcdade259c05ab3436b5fab711612093c275ef
    Added Reference https://git.kernel.org/stable/c/e2b46cd5796f083e452fbc624f65b80328b0c1a4
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jul. 03, 2024

    Action Type Old Value New Value
    Added CWE CISA-ADP CWE-125
    Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 28, 2024

    Action Type Old Value New Value
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Apr. 28, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: ipvlan: Fix out-of-bound bugs caused by unset skb->mac_header If an AF_PACKET socket is used to send packets through ipvlan and the default xmit function of the AF_PACKET socket is changed from dev_queue_xmit() to packet_direct_xmit() via setsockopt() with the option name of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset and remains as the initial value of 65535, this may trigger slab-out-of-bounds bugs as following: ================================================================= UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6 ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 all Trace: print_address_description.constprop.0+0x1d/0x160 print_report.cold+0x4f/0x112 kasan_report+0xa3/0x130 ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] ipvlan_start_xmit+0x29/0xa0 [ipvlan] __dev_direct_xmit+0x2e2/0x380 packet_direct_xmit+0x22/0x60 packet_snd+0x7c9/0xc40 sock_sendmsg+0x9a/0xa0 __sys_sendto+0x18a/0x230 __x64_sys_sendto+0x74/0x90 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd The root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn't reset skb->mac_header as dev_queue_xmit() In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() is called. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() which use "skb->head + skb->mac_header", out-of-bound access occurs. This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2() and reset mac header in multicast to solve this out-of-bound bug.
    Added Reference kernel.org https://git.kernel.org/stable/c/e2b46cd5796f083e452fbc624f65b80328b0c1a4 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/25efdbe5fe542c3063d1948cc4e98abcb57621ca [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/bffcdade259c05ab3436b5fab711612093c275ef [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/346e94aa4a99378592c46d6a34c72703a32bd5be [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/ab4a733874ead120691e8038272d22f8444d3638 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/8d06006c7eb75587d986da46c48ba9274f94e8e7 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/b583e6b25bf9321c91154f6c78d2173ef12c4241 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/81225b2ea161af48e093f58e8dfee6d705b16af4 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-48651 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-48651 weaknesses.

CVSS31 - Vulnerability Scoring System
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Latest DB Update: Jul. 15, 2025 18:55