Bluetooth: virtio_bt: avoid OOB read of build info string

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90257
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:22 UTC
Updated2026-09-17 17:17:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: virtio_bt: avoid OOB read of build info string The virtbt_setup_zephyr() sends the Zephyr vendor command 0xfc08 (Read Build Information) and hands the response to bt_dev_info() and hci_set_fw_info() as a "%s" string starting at skb->data + 1, without checking the length. A backend that answers with status only leaves that pointer past the end of the received data, so the walk reads adjacent slab memory until it meets a NUL. Those bytes reach the kernel log and the firmware-info debugfs file. To fix this, print the string with a bounded "%.*s" limited to skb->len - 1. A short or unterminated response then prints as much as arrived instead of failing setup. This mirrors commit dd068ef04412 ("Bluetooth: bpa10x: avoid OOB read of revision string in bpa10x_setup()"), which fixed the identical pattern.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected afd2daa26c7abd734d78bd274fc6c59a15e61063 fb445b3466a8d1c7a0b0d0676fb475e3ce22d94e git Not specified
CNA Linux Linux affected afd2daa26c7abd734d78bd274fc6c59a15e61063 d08c99abf06133a7829d46627e77e3315ca974d2 git Not specified
CNA Linux Linux affected afd2daa26c7abd734d78bd274fc6c59a15e61063 0e388d805233a883a31271676eae6031dfc9e898 git Not specified
CNA Linux Linux affected afd2daa26c7abd734d78bd274fc6c59a15e61063 54e9387eb7546eaa6f600220599d55740956ffc3 git Not specified
CNA Linux Linux affected afd2daa26c7abd734d78bd274fc6c59a15e61063 be1e3df2c49c91b0a052c6563884e8d39bd768b2 git Not specified
CNA Linux Linux affected afd2daa26c7abd734d78bd274fc6c59a15e61063 84ea9c99874804f5ca13f35bbc186ba93902f30f git Not specified
CNA Linux Linux affected afd2daa26c7abd734d78bd274fc6c59a15e61063 502adc06ba76dee19c292ae4a07d74d202fe734d git Not specified
CNA Linux Linux affected 5.13 Not specified
CNA Linux Linux unaffected 5.13 semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/502adc06ba76dee19c292ae4a07d74d202fe734d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/84ea9c99874804f5ca13f35bbc186ba93902f30f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0e388d805233a883a31271676eae6031dfc9e898 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/be1e3df2c49c91b0a052c6563884e8d39bd768b2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/54e9387eb7546eaa6f600220599d55740956ffc3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fb445b3466a8d1c7a0b0d0676fb475e3ce22d94e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d08c99abf06133a7829d46627e77e3315ca974d2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report