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CVE-2022-48819— tcp: take care of mixed splice()/sendmsg(MSG_ZEROCOPY) case

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tcp模块中发现混合splice函数/sendmsg(MSG_ZEROCOPY)问题。在处理sendpage函数和sendmsg(MSG_ZEROCOPY)混合调用时，可能会导致inet_sock_destruct函数中的警告。

AI Predicted 5.3 Difficulty: Easy EPSS 0.23% · P14

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 9b65b17db72313b7a4fe9bc9502928c88be57986< 47f3860c4931175f112f28dcac66eacca9b1040f affected
9b65b17db72313b7a4fe9bc9502928c88be57986< f8d9d938514f46c4892aff6bfe32f425e84d81cc affected
5.16 affected
< 5.16 unaffected
5.16.10≤ 5.16.* unaffected
5.17≤ * unaffected
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I. Basic Information for CVE-2022-48819

Vulnerability Information
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Vulnerability Title
tcp: take care of mixed splice()/sendmsg(MSG_ZEROCOPY) case
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tcp: take care of mixed splice()/sendmsg(MSG_ZEROCOPY) case syzbot found that mixing sendpage() and sendmsg(MSG_ZEROCOPY) calls over the same TCP socket would again trigger the infamous warning in inet_sock_destruct() WARN_ON(sk_forward_alloc_get(sk)); While Talal took into account a mix of regular copied data and MSG_ZEROCOPY one in the same skb, the sendpage() path has been forgotten. We want the charging to happen for sendpage(), because pages could be coming from a pipe. What is missing is the downgrading of pure zerocopy status to make sure sk_forward_alloc will stay synced. Add tcp_downgrade_zcopy_pure() helper so that we can use it from the two callers.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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tcp模块中发现混合splice函数/sendmsg(MSG_ZEROCOPY)问题。在处理sendpage函数和sendmsg(MSG_ZEROCOPY)混合调用时，可能会导致inet_sock_destruct函数中的警告。
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 9b65b17db72313b7a4fe9bc9502928c88be57986 ~ 47f3860c4931175f112f28dcac66eacca9b1040f -
Linux Linux 5.16 -

II. Public POCs for CVE-2022-48819

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III. Intelligence Information for CVE-2022-48819

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Other References for CVE-2022-48819 (2)

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

CVE-2022-48788 9.8 CRITICAL nvme-rdma: fix possible use-after-free in transport error_recovery work
CVE-2022-48789 9.8 CRITICAL nvme-tcp: fix possible use-after-free in transport error_recovery work
CVE-2022-48790 9.8 CRITICAL nvme: fix a possible use-after-free in controller reset during load
CVE-2022-48851 9.8 CRITICAL staging: gdm724x: fix use after free in gdm_lte_rx()
CVE-2022-48829 9.1 CRITICAL NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
CVE-2022-48828 9.1 CRITICAL NFSD: Fix ia_size underflow
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-2022-48782 8.8 HIGH mctp: fix use after free
CVE-2022-48785 8.8 HIGH ipv6: mcast: use rcu-safe version of ipv6_get_lladdr()
CVE-2022-48796 7.8 HIGH iommu: Fix potential use-after-free during probe
CVE-2022-48847 7.8 HIGH watch_queue: Fix filter limit check
CVE-2022-48822 7.8 HIGH usb: f_fs: Fix use-after-free for epfile
CVE-2022-48839 7.8 HIGH net/packet: fix slab-out-of-bounds access in packet_recvmsg()
CVE-2022-48816 7.8 HIGH SUNRPC: lock against ->sock changing during sysfs read
CVE-2022-48801 7.8 HIGH iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL
CVE-2022-48792 7.8 HIGH scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task
CVE-2022-48791 7.8 HIGH scsi: pm8001: Fix use-after-free for aborted TMF sas_task
CVE-2022-48821 7.8 HIGH misc: fastrpc: avoid double fput() on failed usercopy
CVE-2024-41008 7.8 HIGH drm/amdgpu: change vm->task_info handling

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-2022-48819

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