cbcvebase.
CVE-2023-52775
published 2024-05-21

CVE-2023-52775: In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid data corruption caused by decline We found a data corruption issue during…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.25%
16.3th percentile
In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid data corruption caused by decline We found a data corruption issue during testing of SMC-R on Redis applications. The benchmark has a low probability of reporting a strange error as shown below. "Error: Protocol error, got "\xe2" as reply type byte" Finally, we found that the retrieved error data was as follows: 0xE2 0xD4 0xC3 0xD9 0x04 0x00 0x2C 0x20 0xA6 0x56 0x00 0x16 0x3E 0x0C 0xCB 0x04 0x02 0x01 0x00 0x00 0x20 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xE2 It is quite obvious that this is a SMC DECLINE message, which means that the applications received SMC protocol message. We found that this was caused by the following situations: client server ¦ clc proposal -------------> ¦ clc accept wait llc confirm send llc confirm ¦failed llc confirm ¦ x------ (after 2s)timeout wait llc confirm rsp wait decline (after 1s) timeout (after 2s) timeout ¦ decline --------------> ¦ decline <-------------- As a result, a decline message was sent in the implementation, and this message was read from TCP by the already-fallback connection. This patch double the client timeout as 2x of the server value, With this simple change, the Decline messages should never cross or collide (during Confirm link timeout). This issue requires an immediate solution, since the protocol updates involve a more long-term solution.

Affected

16 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.66-1 (bookworm)linux 6.1.66-1 (bookworm)
linuxlinux——
linuxlinux>= 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 < 5ada292b5c504720a0acef8cae9acc62a694d19c5ada292b5c504720a0acef8cae9acc62a694d19c
linuxlinux>= 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 < 90072af9efe8c7bd7d086709014ddd44cebd5e7c90072af9efe8c7bd7d086709014ddd44cebd5e7c
linuxlinux>= 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 < 94a0ae698b4d5d5bb598e23228002a1491c50add94a0ae698b4d5d5bb598e23228002a1491c50add
linuxlinux>= 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 < 7234d2b5dffa5af77fd4e0deaebab509e130c6b17234d2b5dffa5af77fd4e0deaebab509e130c6b1
linuxlinux>= 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 < e6d71b437abc2f249e3b6a1ae1a7228e09c6e563e6d71b437abc2f249e3b6a1ae1a7228e09c6e563
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 5.10.205-15.10.205-1
linuxlinux_kernel>= 0 < 6.1.66-16.1.66-1
linuxlinux_kernel>= 0 < 6.6.8-16.6.8-1
linuxlinux_kernel>= 0 < 6.6.8-16.6.8-1
linuxlinux_kernel>= 5.11 < 5.15.1415.15.141
linuxlinux_kernel>= 5.16 < 6.1.656.1.65
linuxlinux_kernel>= 5.8 < 5.10.2035.10.203
linuxlinux_kernel>= 6.2 < 6.6.46.6.4

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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