CVE catalog

CVE-2026-43127

In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix circular locking dependency in run_unpack_ex Syzbot reported a circular locking dependency between wnd->rw_lock (sbi->u

[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 6, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.12% · Oct 25, 2026

In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix circular locking dependency in run_unpack_ex Syzbot reported a circular locking dependency between wnd->rw_lock (sbi->used.bitmap) and ni->file.run_lock. The deadlock scenario: 1. ntfs_extend_mft() takes ni->file.run_lock then wnd->rw_lock. 2. run_unpack_ex() takes wnd->rw_lock then tries to acquire ni->file.run_lock inside ntfs_refresh_zone(). This creates an AB-BA deadlock. Fix this by using down_read_trylock() instead of down_read() when acquiring run_lock in run_unpack_ex(). If the lock is contended, skip ntfs_refresh_zone() - the MFT zone will be refreshed on the next MFT operation. This breaks the circular dependency since we never block waiting for run_lock while holding wnd->rw_lock.

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`	not affected
Debian	linux	bookworm-security	`6.1.190-1`	not affected
Cpe	linux_kernel	Not reported	`6.18.16`	fixed
Cpe	linux_kernel	Not reported	`6.19.6`	fixed
Cpe	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	`Not affected`	unimportant	Not reported	Not reported
Cpe	linux_kernel	cpe	Not reported	`6.18.16`	Not reported	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-2026-43127	Not reported

OpenFactory catalog packages

[Debian 13 (Trixie)]

[bpftool]Affected
Source package: [linux]
Details (10)
- 7.5.0+6.12.94-1 · amd64 · trixie
  Affected
  nvd · linux · debian · 13
- 7.5.0+6.12.94-1 · arm64 · trixie
  Affected
  nvd · linux · debian · 13
- 7.8.0+7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 7.8.0+7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 7.5.0+6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 7.5.0+6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 7.5.0+6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 7.5.0+6.12.107-1 · arm64 · trixie-security
  Affected
  nvd · linux · debian · 13
- 7.5.0+6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 7.5.0+6.12.113-1 · amd64 · trixie-security
  Affected
  nvd · linux · debian · 13
[hyperv-daemons]Affected
Source package: [linux]
Details (10)
- 6.12.94-1 · amd64 · trixie
  Affected
  nvd · linux · debian · 13
- 6.12.94-1 · arm64 · trixie
  Affected
  nvd · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.107-1 · arm64 · trixie-security
  Affected
  nvd · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  nvd · linux · debian · 13
[intel-sdsi]Affected
Source package: [linux]
Details (7)
- 6.12.94-1 · amd64 · trixie
  Affected
  nvd · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  nvd · linux · debian · 13
[libcpupower1]Affected
Source package: [linux]
Details (10)
- 6.12.94-1 · amd64 · trixie
  Affected
  nvd · linux · debian · 13
- 6.12.94-1 · arm64 · trixie
  Affected
  nvd · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.107-1 · arm64 · trixie-security
  Affected
  nvd · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  nvd · linux · debian · 13
[libcpupower-dev]Affected
Source package: [linux]
Details (10)
- 6.12.94-1 · amd64 · trixie
  Affected
  nvd · linux · debian · 13
- 6.12.94-1 · arm64 · trixie
  Affected
  nvd · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.107-1 · arm64 · trixie-security
  Affected
  nvd · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  nvd · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.12+deb13-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.12+deb13-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.12+deb13-arm64-16k]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.12+deb13-cloud-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.12+deb13-cloud-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.12+deb13-rt-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.12+deb13-rt-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.15+deb13-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.15+deb13-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.15+deb13-arm64-16k]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.15+deb13-cloud-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.15+deb13-cloud-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.15+deb13-rt-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.15+deb13-rt-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  nvd · linux · debian · 13
[linux-base-6.18.5+deb13-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.5-1~bpo13+1 · amd64 · trixie-backports
  Affected
  nvd · linux · debian · 13

Next results

Observed: Oct 27, 2026, 7:44:02 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]