CVE-2026-43117
published 2026-05-06CVE-2026-43117: In the Linux kernel, the following vulnerability has been resolved: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() If…
PriorityP345critical9.1CVSS 3.1
AVNACLPRNUINSUCHINAH
EPSS
0.40%
32.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
If overlay is used on top of btrfs, dentry->d_sb translates to overlay's
super block and fsid assignment will lead to a crash.
Use file_inode(file)->i_sb to always get btrfs_sb.
Affected
59 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < 4a7bab35fad5251c8cb738161152578cd83b6b9c | 4a7bab35fad5251c8cb738161152578cd83b6b9c |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < 520e8b4bcf872a534a7bf61ccf880047642df296 | 520e8b4bcf872a534a7bf61ccf880047642df296 |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < e252db8ca2a01f82d472091f35d549b313278636 | e252db8ca2a01f82d472091f35d549b313278636 |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < c09a7446aab5773f38d6abb25fce99b8e1dfbc97 | c09a7446aab5773f38d6abb25fce99b8e1dfbc97 |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < 32372781d664a9b03c40343e96c29d0a6139f97d | 32372781d664a9b03c40343e96c29d0a6139f97d |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < 2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a | 2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < d110d7cdb045715c0b45b0dfd974525bb38f653d | d110d7cdb045715c0b45b0dfd974525bb38f653d |
| linux | linux | >= bc074524e123ded281cde25ebc5661910f9679e3 < a85b46db143fda5869e7d8df8f258ccef5fa1719 | a85b46db143fda5869e7d8df8f258ccef5fa1719 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 4.8 < 6.6.136 | 6.6.136 |
| linux | linux_kernel | >= 6.13 < 6.18.24 | 6.18.24 |
| linux | linux_kernel | >= 6.19 < 6.19.14 | 6.19.14 |
| linux | linux_kernel | >= 6.7 < 6.12.83 | 6.12.83 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-5.15 | — | — |
| ubuntu | linux-aws-6.8 | — | — |
| ubuntu | linux-aws-fips | — | — |
| ubuntu | linux-azure | — | — |
| ubuntu | linux-azure-5.15 | — | — |
| ubuntu | linux-azure-fde-5.15 | — | — |
| ubuntu | linux-azure-fips | — | — |
| ubuntu | linux-fips | — | — |
| ubuntu | linux-gcp | — | — |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
vendor_ubuntu8.8HIGH
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- x86 platform drivers;
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- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
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- RISC-V architecture;
- Cryptographic API;
- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
- SCSI subsystem;
- SPI subsystem;
- TCM subsystem;
- USB over IP driver;
- File systems infrastructure;
- HFS+ file system;
- Network file system (NFS) server daemon;
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Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
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- GPIO subsystem;
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- Hardware monitoring dr
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An attacker could possibly use these to compromise the system.
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- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
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CVE-2026-43304 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
- B.A.T.M.A.N. meshing protocol;
- Ethernet br
Red Hat
kernel: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
vendor_redhat·2026-05-06
CVE-2026-43117 kernel: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
kernel: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
No description is available for this CVE.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
Package: kernel (Red Hat Enterprise Linux 9) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 9) - Not affected
VulDB
Linux Kernel up to 6.6.135/6.12.82/6.18.23/6.19.13 btrfs btrfs_sync_file denial of service (WID-SEC-2026-1385)
vuldb·2026-06-09·CVSS 9.1
CVE-2026-43117 [CRITICAL] Linux Kernel up to 6.6.135/6.12.82/6.18.23/6.19.13 btrfs btrfs_sync_file denial of service (WID-SEC-2026-1385)
A vulnerability has been found in Linux Kernel up to 6.6.135/6.12.82/6.18.23/6.19.13 and classified as critical. This issue affects the function btrfs_sync_file of the component btrfs. The manipulation leads to denial of service.
This vulnerability is listed as CVE-2026-43117. The attack must be carried out from within the local network. There is no available exploit.
The affected component should be upgraded.
GHSA
GHSA-8r24-mq27-r6cw: In the Linux kernel, the following vulnerability has been resolved:
btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
ghsa_unreviewed·2026-05-06
CVE-2026-43117 GHSA-8r24-mq27-r6cw: In the Linux kernel, the following vulnerability has been resolved:
btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
In the Linux kernel, the following vulnerability has been resolved:
btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
If overlay is used on top of btrfs, dentry->d_sb translates to overlay's
super block and fsid assignment will lead to a crash.
Use file_inode(file)->i_sb to always get btrfs_sb.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8ahttps://git.kernel.org/stable/c/32372781d664a9b03c40343e96c29d0a6139f97dhttps://git.kernel.org/stable/c/4a7bab35fad5251c8cb738161152578cd83b6b9chttps://git.kernel.org/stable/c/520e8b4bcf872a534a7bf61ccf880047642df296https://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719https://git.kernel.org/stable/c/c09a7446aab5773f38d6abb25fce99b8e1dfbc97https://git.kernel.org/stable/c/d110d7cdb045715c0b45b0dfd974525bb38f653dhttps://git.kernel.org/stable/c/e252db8ca2a01f82d472091f35d549b313278636
2026-05-06
Published