net/smc: avoid data corruption caused by decline

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-52775
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-21 16:15:16 UTC
Updated2026-08-04 10:18:41 UTC
DescriptionIn 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 <------------- ¦ clc confirm -------------> 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-787

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
3.1CNADECLARED8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 5ada292b5c504720a0acef8cae9acc62a694d19c git Not specified
CNA Linux Linux affected 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 90072af9efe8c7bd7d086709014ddd44cebd5e7c git Not specified
CNA Linux Linux affected 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 94a0ae698b4d5d5bb598e23228002a1491c50add git Not specified
CNA Linux Linux affected 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 7234d2b5dffa5af77fd4e0deaebab509e130c6b1 git Not specified
CNA Linux Linux affected 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44 e6d71b437abc2f249e3b6a1ae1a7228e09c6e563 git Not specified
CNA Linux Linux affected 5.8 Not specified
CNA Linux Linux unaffected 5.8 semver Not specified
CNA Linux Linux unaffected 5.10.203 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.141 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.65 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.4 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7234d2b5dffa5af77fd4e0deaebab509e130c6b1 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/90072af9efe8c7bd7d086709014ddd44cebd5e7c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/94a0ae698b4d5d5bb598e23228002a1491c50add af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/5ada292b5c504720a0acef8cae9acc62a694d19c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/e6d71b437abc2f249e3b6a1ae1a7228e09c6e563 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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