CVE catalog

CVE-2026-43299

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not ASSERT() when the fs flips RO inside btrfs_repair_io_failure() [BUG] There is a bug report that when btrfs hits ENOS

[CVE catalog]

Severity: Medium · CVSS 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published: May 8, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.13% · Oct 25, 2026

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not ASSERT() when the fs flips RO inside btrfs_repair_io_failure() [BUG] There is a bug report that when btrfs hits ENOSPC error in a critical path, btrfs flips RO (this part is expected, although the ENOSPC bug still needs to be addressed). The problem is after the RO flip, if there is a read repair pending, we can hit the ASSERT() inside btrfs_repair_io_failure() like the following: BTRFS info (device vdc): relocating block group 30408704 flags metadata|raid1 ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: fs/btrfs/extent-tree.c:3235 at __btrfs_free_extent.isra.0+0x453/0xfd0, CPU#1: btrfs/383844 Modules linked in: kvm_intel kvm irqbypass [...] ---[ end trace 0000000000000000 ]--- BTRFS info (device vdc state EA): 2 enospc errors during balance BTRFS info (device vdc state EA): balance: ended with status: -30 BTRFS error (device vdc state EA): parent transid verify failed on logical 30556160 mirror 2 wanted 8 found 6 BTRFS error (device vdc state EA): bdev /dev/nvme0n1 errs: wr 0, rd 0, flush 0, corrupt 10, gen 0 [...] assertion failed: !(fs_info->sb->s_flags & SB_RDONLY) :: 0, in fs/btrfs/bio.c:938 ------------[ cut here ]------------ assertion failed: !(fs_info->sb->s_flags & SB_RDONLY) :: 0, in fs/btrfs/bio.c:938 kernel BUG at fs/btrfs/bio.c:938! Oops: invalid opcode: 0000 [#1] SMP NOPTI CPU: 0 UID: 0 PID: 868 Comm: kworker/u8:13 Tainted: G W N 6.19.0-rc6+ #4788 PREEMPT(full) Tainted: [W]=WARN, [N]=TEST Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014 Workqueue: btrfs-endio simple_end_io_work RIP: 0010:btrfs_repair_io_failure.cold+0xb2/0x120 RSP: 0000:ffffc90001d2bcf0 EFLAGS: 00010246 RAX: 0000000000000051 RBX: 0000000000001000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8305cf42 RDI: 00000000ffffffff RBP: 0000000000000002 R08: 00000000fffeffff R09: ffffffff837fa988 R10: ffffffff8327a9e0 R11: 6f69747265737361 R12: ffff88813018d310 R13: ffff888168b8a000 R14: ffffc90001d2bd90 R15: ffff88810a169000 FS: 0000000000000000(0000) GS:ffff8885e752c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 ------------[ cut here ]------------ [CAUSE] The cause of -ENOSPC error during the test case btrfs/124 is still unknown, although it's known that we still have cases where metadata can be over-committed but can not be fulfilled correctly, thus if we hit such ENOSPC error inside a critical path, we have no choice but abort the current transaction. This will mark the fs read-only. The problem is inside the btrfs_repair_io_failure() path that we require the fs not to be mount read-only. This is normally fine, but if we are doing a read-repair meanwhile the fs flips RO due to a critical error, we can enter btrfs_repair_io_failure() with super block set to read-only, thus triggering the above crash. [FIX] Just replace the ASSERT() with a proper return if the fs is already read-only.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	linux	sid	`7.2.12-1`	fixed
Debian	linux	forky	`7.2.12-1`	fixed
Debian	linux	trixie	`6.12.107-1`	vulnerable
Debian	linux	trixie-security	`6.12.113-1`	vulnerable
Debian	linux	bookworm	`6.1.176-1`	vulnerable
Debian	linux	bookworm-security	`6.1.190-1`	vulnerable
Cpe	linux	Not reported	Not reported	vulnerable
Cpe	linux_kernel	Not reported	`6.19.6`	fixed
Cpe	linux_kernel	Not reported	`6.19.6`	fixed
Linux	Kernel	Not reported	`6.18.57`	fixed
Linux	Kernel	Not reported	`6.19.6`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	linux	source	sid	`6.19.6-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	forky	`6.19.6-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	linux	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
Cpe	linux_kernel	cpe	Not reported	`6.19.6`	Not reported	Not reported	Not reported
Cpe	linux_kernel	cpe	Not reported	`6.19.6`	Not reported	NVD-CVE-2026-43299	Not reported
Linux	Kernel	Linux	Not reported	`6.18.57`	Not reported	CVE-2026-43299	Not reported
Linux	Kernel	Linux	Not reported	`6.19.6`	Not reported	CVE-2026-43299	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[bpftool]Affected
Source package: [linux]
Details (6)
- 7.1.0+6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 7.1.0+6.1.176-1 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 7.5.0+6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 7.5.0+6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 7.1.0+6.1.180-1 · amd64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 7.1.0+6.1.180-1 · arm64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[hyperv-daemons]Affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · amd64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · arm64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[intel-sdsi]Affected
Source package: [linux]
Details (1)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[libcpupower1]Affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · amd64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · arm64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[libcpupower-dev]Affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · amd64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · arm64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-bpf-dev]Affected
Source package: [linux]
Details (2)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-compiler-gcc-12-x86]Affected
Source package: [linux]
Details (2)
- 6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · amd64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-config-6.1]Affected
Source package: [linux]
Details (4)
- 6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · amd64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · arm64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-cpupower]Affected
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · amd64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · arm64 · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-doc]Affected
Source package: [linux]
Details (32)
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · all · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · all · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-doc-6.1]Affected
Source package: [linux]
Details (6)
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.176-1 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · all · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.180-1 · all · bookworm-security
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-amd64]Affected
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-arm64]Affected
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-cloud-amd64]Affected
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-cloud-arm64]Affected
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-common]Affected
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-common-rt]Affected
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
- 6.1.170-3 · all · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-rt-amd64]Affected
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-47-rt-arm64]Affected
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12
[linux-headers-6.1.0-50-amd64]Affected
Source package: [linux]
Details (1)
- 6.1.176-1 · amd64 · bookworm
  Affected
  nvd · linux · debian · bookworm; nvd · linux · debian · 12

Next results

Observed: Oct 27, 2026, 7:37:52 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]