CVE-2022-49378

MEDIUM EPSS 15.8%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: sfc: fix considering that all channels have TX queues Normally, all channels have RX and TX queues, but this is not true if modparam efx_separate_tx_channels=1 is used. In that cases, some channels only have RX queues and others only TX queues (or more preciselly, they have them allocated, but not initialized). Fix efx_channel_has_tx_queues to return the correct value for this case too. Messages shown at probe time before the fix: sfc 0000:03:00.0 ens6f0np0: MC command 0x82 inlen 544 failed rc=-22 (raw=0) arg=0 ------------[ cut here ]------------ netdevice: ens6f0np0: failed to initialise TXQ -1 WARNING: CPU: 1 PID: 626 at drivers/net/ethernet/sfc/ef10.c:2393 efx_ef10_tx_init+0x201/0x300 [sfc] [...] stripped RIP: 0010:efx_ef10_tx_init+0x201/0x300 [sfc] [...] stripped Call Trace: efx_init_tx_queue+0xaa/0xf0 [sfc] efx_start_channels+0x49/0x120 [sfc] efx_start_all+0x1f8/0x430 [sfc] efx_net_open+0x5a/0xe0 [sfc] __dev_open+0xd0/0x190 __dev_change_flags+0x1b3/0x220 dev_change_flags+0x21/0x60 [...] stripped Messages shown at remove time before the fix: sfc 0000:03:00.0 ens6f0np0: failed to flush 10 queues sfc 0000:03:00.0 ens6f0np0: failed to flush queues

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
15.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥5.5.1  –  <5.10.122
linuxlinux_kernel*≥5.11  –  <5.15.47
linuxlinux_kernel*≥5.16  –  <5.17.15
linuxlinux_kernel*≥5.18  –  <5.18.4
linuxlinux_kernel5.5any
linuxlinux_kernel5.5any
linuxlinux_kernel5.5any
linuxlinux_kernel5.5any
linuxlinux_kernel5.5any
linuxlinux_kernel5.5any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/2e102b53f8a778f872dc137f4c7ac548705817aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5567d69b95b9c07e1c56f15cf0301251d12e5f97
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8f81a4113e1e574d2cbde4f2cd599380a9189c0f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/913d45f02d346ce41c4aad057eaf53a8ed449dc3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7e8d5e25dc762b70f9c88ec6b7d451d0816eead
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2e102b53f8a778f872dc137f4c7ac548705817aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5567d69b95b9c07e1c56f15cf0301251d12e5f97
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8f81a4113e1e574d2cbde4f2cd599380a9189c0f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/913d45f02d346ce41c4aad057eaf53a8ed449dc3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7e8d5e25dc762b70f9c88ec6b7d451d0816eead
    Patch