net: qrtr: ns: Limit the maximum number of lookups

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Summary

CVECVE-2026-46026
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:21 UTC
Updated2026-05-27 14:48:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Limit the maximum number of lookups Current code does no bound checking on the number of lookups a client can perform. Though the code restricts the lookups to local clients, there is still a possibility of a malicious local client sending a flood of NEW_LOOKUP messages over the same socket. Fix this issue by limiting the maximum number of lookups to 64 globally. Since the nameserver allows only atmost one local observer, this global lookup count will ensure that the lookups stay within the limit. Note that, limit of 64 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.

Risk And Classification

EPSS: 0.000180000 probability, percentile 0.050770000 (date 2026-06-01)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3 git Not specified
CNA Linux Linux affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 76adf8f69b0bb3ab20be7c58f5d555027332d113 git Not specified
CNA Linux Linux affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 20855cef7e659ef84ac73251256fa530819b2346 git Not specified
CNA Linux Linux affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 2b930bc77e00cb27e1d6e1d497b3b596283465ef git Not specified
CNA Linux Linux affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 5640227d9a21c6a8be249a10677b832e7f40dc55 git Not specified
CNA Linux Linux affected 5.7 Not specified
CNA Linux Linux unaffected 5.7 semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.86 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.27 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.4 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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