The check_alu_op() function in kernel/bpf/verifier.c in the Linux kernel through v5.16-rc5 did not properly update bounds while handling the mov32 instruction, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."
References
Link | Resource |
---|---|
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=b1a7288dedc6caf9023f2676b4f5ed34cf0d4029 | Exploit Patch Vendor Advisory |
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=3cf2b61eb06765e27fec6799292d9fb46d0b7e60 | Exploit Patch Vendor Advisory |
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=e572ff80f05c33cd0cb4860f864f5c9c044280b6 | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
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Information
Published : 2022-02-11 07:15
Updated : 2022-02-23 10:12
NVD link : CVE-2021-45402
Mitre link : CVE-2021-45402
JSON object : View
CWE
CWE-668
Exposure of Resource to Wrong Sphere
Products Affected
linux
- linux_kernel