Products
Linux kernel
Linux Kernel
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Tags
CVE-2021-47248 details
Last Modified : May 21, 2024, 4:54 p.m.
Description
In the Linux kernel, the following vulnerability has been resolved: udp: fix race between close() and udp_abort() Kaustubh reported and diagnosed a panic in udp_lib_lookup(). The root cause is udp_abort() racing with close(). Both racing functions acquire the socket lock, but udp{v6}_destroy_sock() release it before performing destructive actions. We can't easily extend the socket lock scope to avoid the race, instead use the SOCK_DEAD flag to prevent udp_abort from doing any action when the critical race happens. Diagnosed-and-tested-by: Kaustubh Pandey <kapandey@codeaurora.org>
CVSS Score
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Weakness
Weakness | Name | Description |
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References
URL | Source |
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https://git.kernel.org/stable/c/2f73448041bd0682d4b552cfd314ace66107f1ad | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
https://git.kernel.org/stable/c/5a88477c1c85e4baa51e91f2d40f2166235daa56 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
https://git.kernel.org/stable/c/65310b0aff86980a011c7c7bfa487a333d4ca241 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
https://git.kernel.org/stable/c/8729ec8a2238152a4afc212a331a6cd2c61aeeac | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
https://git.kernel.org/stable/c/a0882f68f54f7a8b6308261acee9bd4faab5a69e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
https://git.kernel.org/stable/c/a8b897c7bcd47f4147d066e22cc01d1026d7640e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
https://git.kernel.org/stable/c/e3c36c773aed0fef8b1d3d555b43393ec564400f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |