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CVE-2022-48816— SUNRPC: lock against ->sock changing during sysfs read

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SUNRPC模块中发现竞争条件问题。在sysfs读取过程中，如果不持有recv_mutex，则-esock可能会被异步设置为NULL。

CVSS 7.8 · High EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1564.008 · Email Hiding Rules

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux a8482488a7d6d320f63a9ee1912dbb5ae5b80a61< fdc42287ae3f8a35cc2098307f52d7864b4bc8ed affected
a8482488a7d6d320f63a9ee1912dbb5ae5b80a61< 9482ab4540f5bcc869b44c067ae99b5fca16bd07 affected
a8482488a7d6d320f63a9ee1912dbb5ae5b80a61< b49ea673e119f59c71645e2f65b3ccad857c90ee affected
21a2be1a5145d072deedc7cdc5b2d17380abea75 affected
77876473912d1bf1ed16bffa1674e5ff0f499f25 affected
5.10.67< 5.11 affected
5.13.19< 5.14 affected
5.14 affected
… +4 more rows
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I. Basic Information for CVE-2022-48816

Vulnerability Information
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Vulnerability Title
SUNRPC: lock against ->sock changing during sysfs read
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: lock against ->sock changing during sysfs read ->sock can be set to NULL asynchronously unless ->recv_mutex is held. So it is important to hold that mutex. Otherwise a sysfs read can trigger an oops. Commit 17f09d3f619a ("SUNRPC: Check if the xprt is connected before handling sysfs reads") appears to attempt to fix this problem, but it only narrows the race window.
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 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SUNRPC模块中发现竞争条件问题。在sysfs读取过程中，如果不持有recv_mutex，则-esock可能会被异步设置为NULL。
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 a8482488a7d6d320f63a9ee1912dbb5ae5b80a61 ~ fdc42287ae3f8a35cc2098307f52d7864b4bc8ed -
Linux Linux 5.14 -

II. Public POCs for CVE-2022-48816

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III. Intelligence Information for CVE-2022-48816

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Patches & Fixes for CVE-2022-48816 (1)

Other References for CVE-2022-48816 (2)

Same Patch Batch · Linux · 2024-07-16 · 98 CVEs total

CVE-2022-48790 9.8 CRITICAL nvme: fix a possible use-after-free in controller reset during load
CVE-2022-48789 9.8 CRITICAL nvme-tcp: fix possible use-after-free in transport error_recovery work
CVE-2022-48788 9.8 CRITICAL nvme-rdma: fix possible use-after-free in transport error_recovery work
CVE-2022-48851 9.8 CRITICAL staging: gdm724x: fix use after free in gdm_lte_rx()
CVE-2022-48828 9.1 CRITICAL NFSD: Fix ia_size underflow
CVE-2022-48829 9.1 CRITICAL NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
CVE-2022-48830 8.8 HIGH can: isotp: fix potential CAN frame reception race in isotp_rcv()
CVE-2022-48864 8.8 HIGH vdpa/mlx5: add validation for VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET command
CVE-2022-48785 8.8 HIGH ipv6: mcast: use rcu-safe version of ipv6_get_lladdr()
CVE-2022-48782 8.8 HIGH mctp: fix use after free
CVE-2022-48779 7.8 HIGH net: mscc: ocelot: fix use-after-free in ocelot_vlan_del()
CVE-2022-48847 7.8 HIGH watch_queue: Fix filter limit check
CVE-2022-48801 7.8 HIGH iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL
CVE-2022-48822 7.8 HIGH usb: f_fs: Fix use-after-free for epfile
CVE-2022-48791 7.8 HIGH scsi: pm8001: Fix use-after-free for aborted TMF sas_task
CVE-2022-48786 7.8 HIGH vsock: remove vsock from connected table when connect is interrupted by a signal
CVE-2022-48787 7.8 HIGH iwlwifi: fix use-after-free
CVE-2024-41008 7.8 HIGH drm/amdgpu: change vm->task_info handling
CVE-2022-48821 7.8 HIGH misc: fastrpc: avoid double fput() on failed usercopy
CVE-2022-48839 7.8 HIGH net/packet: fix slab-out-of-bounds access in packet_recvmsg()

Showing top 20 of 98 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-48816

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