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btrfs: fix btrfs_ioctl_space_info() slot_count TOCTOU which can lead to info-leak

🗓️ 29 May 2026 08:04:26Reported by MicrosoftType 
mscve
 mscve🔗 msrc.microsoft.com👁 8 Views

Fix time of check and time of use issue in btrfs space information slot count that leaks.

Related
Detection
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-46159
28 May 202609:36
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1816)
8 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1866)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-124 (ALASKERNEL-5.10-2026-124)
8 Jul 202600:00
–nessus
Tenable Nessus		Debian dla-4664 : ata-modules-5.10.0-43-armmp-di - security update
3 Jul 202600:00
–nessus
Tenable Nessus		Debian dla-4665 : affs-modules-6.1.0-48-4kc-malta-di - security update
3 Jul 202600:00
–nessus
Tenable Nessus		Debian dla-4671 : linux-config-6.1 - security update
6 Jul 202600:00
–nessus
Tenable Nessus		Photon OS 5.0: Linux PHSA-2026-5.0-0904
28 Jun 202600:00
–nessus
Tenable Nessus		SUSE SLES16 Security Update : kernel (SUSE-SU-2026:22099-1)
20 Jun 202600:00
–nessus
Tenable Nessus		SUSE SLES16 Security Update : kernel (SUSE-SU-2026:22127-1)
20 Jun 202600:00
–nessus
Rows per page
Vulners
Node
microsoftazl3_kernel_6.6.139.1-1Range<6.6.141.1-1

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09 Jun 2026 21:40Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.14.7 - 5.5
EPSS0.00093
btrfsspace informationslot counttime of checktime of useinformation leak
8