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CVE-2022-48801— iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL

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iio模块中发现文件相关错误处理问题。在IIO_BUFFER_GET_FD_IOCTL中，如果无法将新创建的文件描述符复制到用户空间，错误处理代码会尝试使用put_unused_fd函数进行清理。

CVSS 7.8 · High EPSS 0.28% · P20

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux f73f7f4da581875f9b1f2fb8ebd1ab15ed634488< b7f54894aa7517d2b6c797a499b9f491e9db9083 affected
f73f7f4da581875f9b1f2fb8ebd1ab15ed634488< 202071d2518537866d291aa7cf26af54e674f4d4 affected
f73f7f4da581875f9b1f2fb8ebd1ab15ed634488< c72ea20503610a4a7ba26c769357d31602769c01 affected
5.13 affected
< 5.13 unaffected
5.15.24≤ 5.15.* unaffected
5.16.10≤ 5.16.* unaffected
5.17≤ * unaffected
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I. Basic Information for CVE-2022-48801

Vulnerability Information
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Vulnerability Title
iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL If we fail to copy the just created file descriptor to userland, we try to clean up by putting back 'fd' and freeing 'ib'. The code uses put_unused_fd() for the former which is wrong, as the file descriptor was already published by fd_install() which gets called internally by anon_inode_getfd(). This makes the error handling code leaving a half cleaned up file descriptor table around and a partially destructed 'file' object, allowing userland to play use-after-free tricks on us, by abusing the still usable fd and making the code operate on a dangling 'file->private_data' pointer. Instead of leaving the kernel in a partially corrupted state, don't attempt to explicitly clean up and leave this to the process exit path that'll release any still valid fds, including the one created by the previous call to anon_inode_getfd(). Simply return -EFAULT to indicate the error.
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iio模块中发现文件相关错误处理问题。在IIO_BUFFER_GET_FD_IOCTL中，如果无法将新创建的文件描述符复制到用户空间，错误处理代码会尝试使用put_unused_fd函数进行清理。
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 f73f7f4da581875f9b1f2fb8ebd1ab15ed634488 ~ b7f54894aa7517d2b6c797a499b9f491e9db9083 -
Linux Linux 5.13 -

II. Public POCs for CVE-2022-48801

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III. Intelligence Information for CVE-2022-48801

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Other References for CVE-2022-48801 (3)

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-2022-48839 7.8 HIGH net/packet: fix slab-out-of-bounds access in packet_recvmsg()
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-2022-48816 7.8 HIGH SUNRPC: lock against ->sock changing during sysfs read

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-2022-48801

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