cbcvebase.
CVE-2024-35827
published 2024-05-17

CVE-2024-35827: In the Linux kernel, the following vulnerability has been resolved: io_uring/net: fix overflow check in io_recvmsg_mshot_prep() The "controllen" variable is…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
12.2th percentile
In the Linux kernel, the following vulnerability has been resolved: io_uring/net: fix overflow check in io_recvmsg_mshot_prep() The "controllen" variable is type size_t (unsigned long). Casting it to int could lead to an integer underflow. The check_add_overflow() function considers the type of the destination which is type int. If we add two positive values and the result cannot fit in an integer then that's counted as an overflow. However, if we cast "controllen" to an int and it turns negative, then negative values *can* fit into an int type so there is no overflow. Good: 100 + (unsigned long)-4 = 96 <-- overflow Bad: 100 + (int)-4 = 96 <-- no overflow I deleted the cast of the sizeof() as well. That's not a bug but the cast is unnecessary.

Affected

19 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.85-1 (bookworm)linux 6.1.85-1 (bookworm)
linuxlinux
linuxlinux>= 9b0fc3c054ff2eb13753104884f1045b5bb3a627 < 868ec868616438df487b9e2baa5a99f8662cc47c868ec868616438df487b9e2baa5a99f8662cc47c
linuxlinux>= 9b0fc3c054ff2eb13753104884f1045b5bb3a627 < 59a534690ecc3af72c6ab121aeac1237a4adae6659a534690ecc3af72c6ab121aeac1237a4adae66
linuxlinux>= 9b0fc3c054ff2eb13753104884f1045b5bb3a627 < 0c8c74bb59e7d77554016efc34c2d10376985e5e0c8c74bb59e7d77554016efc34c2d10376985e5e
linuxlinux>= 9b0fc3c054ff2eb13753104884f1045b5bb3a627 < b6563ad0d599110bd5cf8f56c47d279c3ed796feb6563ad0d599110bd5cf8f56c47d279c3ed796fe
linuxlinux>= 9b0fc3c054ff2eb13753104884f1045b5bb3a627 < 8ede3db5061bb1fe28e2c9683329aafa89d2b1b48ede3db5061bb1fe28e2c9683329aafa89d2b1b4
linuxlinux_kernel>= 0 < 6.1.85-16.1.85-1
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 6.8.0-35.356.8.0-35.35
linuxlinux_kernel>= 6.0 < 6.1.836.1.83
linuxlinux_kernel>= 6.2 < 6.6.236.6.23
linuxlinux_kernel>= 6.7 < 6.7.116.7.11
linuxlinux_kernel>= 6.8 < 6.8.26.8.2
msrcazl3_hyperv-daemons_6.6.22.1-2_on_azure_linux_3.0
msrcazl3_hyperv-daemons_6.6.35.1-1_on_azure_linux_3.0
msrcazure_linux_3.0_arm
msrcazure_linux_3.0_x64

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu6.3MEDIUM
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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