CVE catalog

CVE-2022-50751

linux: CVE-2022-50751

Severity: Medium · CVSS 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published: Jan 1, 2022, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.25% · Oct 25, 2026

In the Linux kernel, the following vulnerability has been resolved: configfs: fix possible memory leak in configfs_create_dir() kmemleak reported memory leaks in configfs_create_dir(): unreferenced object 0xffff888009f6af00 (size 192): comm "modprobe", pid 3777, jiffies 4295537735 (age 233.784s) backtrace: kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273) new_fragment (./include/linux/slab.h:600 fs/configfs/dir.c:163) configfs_register_subsystem (fs/configfs/dir.c:1857) basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic do_one_initcall (init/main.c:1296) do_init_module (kernel/module/main.c:2455) ... unreferenced object 0xffff888003ba7180 (size 96): comm "modprobe", pid 3777, jiffies 4295537735 (age 233.784s) backtrace: kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273) configfs_new_dirent (./include/linux/slab.h:723 fs/configfs/dir.c:194) configfs_make_dirent (fs/configfs/dir.c:248) configfs_create_dir (fs/configfs/dir.c:296) configfs_attach_group.isra.28 (fs/configfs/dir.c:816 fs/configfs/dir.c:852) configfs_register_subsystem (fs/configfs/dir.c:1881) basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic do_one_initcall (init/main.c:1296) do_init_module (kernel/module/main.c:2455) ... This is because the refcount is not correct in configfs_make_dirent(). For normal stage, the refcount is changing as: configfs_register_subsystem() configfs_create_dir() configfs_make_dirent() configfs_new_dirent() # set s_count = 1 dentry->d_fsdata = configfs_get(sd); # s_count = 2 ... configfs_unregister_subsystem() configfs_remove_dir() remove_dir() configfs_remove_dirent() # s_count = 1 dput() ... *dentry_unlink_inode()* configfs_d_iput() # s_count = 0, release However, if we failed in configfs_create(): configfs_register_subsystem() configfs_create_dir() configfs_make_dirent() # s_count = 2 ... configfs_create() # fail ->out_remove: configfs_remove_dirent(dentry) configfs_put(sd) # s_count = 1 return PTR_ERR(inode); There is no inode in the error path, so the configfs_d_iput() is lost and makes sd and fragment memory leaked. To fix this, when we failed in configfs_create(), manually call configfs_put(sd) to keep the refcount correct.

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`	fixed
Debian	linux	trixie-security	`6.12.113-1`	fixed
Debian	linux	bookworm	`6.1.176-1`	fixed
Debian	linux	bookworm-security	`6.1.190-1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	linux	source	sid	`6.1.4-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	forky	`6.1.4-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	trixie	`6.1.4-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	bookworm	`6.1.4-1`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[bpftool]Unknown
Source package: [linux]
Details (6)
- 7.1.0+6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 7.1.0+6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 7.5.0+6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 7.5.0+6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 7.1.0+6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 7.1.0+6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[hyperv-daemons]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[intel-sdsi]Unknown
Source package: [linux]
Details (1)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[libcpupower1]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[libcpupower-dev]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-bpf-dev]Unknown
Source package: [linux]
Details (2)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-compiler-gcc-12-x86]Unknown
Source package: [linux]
Details (2)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-config-6.1]Unknown
Source package: [linux]
Details (4)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-cpupower]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-doc]Unknown
Source package: [linux]
Details (32)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-doc-6.1]Unknown
Source package: [linux]
Details (6)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-arm64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-cloud-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-cloud-arm64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-common]Unknown
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-common-rt]Unknown
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-rt-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-rt-arm64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-50-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 6.1.4-1
  dsa · linux · debian · bookworm

Next results

Observed: Oct 26, 2026, 6:39:46 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]