Linux Kernel up to 6.0.2 xfrm ipcomp_alloc_scratches allocation of resources

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5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.0.2. It has been declared as critical. Affected is the function ipcomp_alloc_scratches of the component xfrm. The manipulation results in allocation of resources. This vulnerability was named CVE-2022-50569. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.0.2. Affected is the function ipcomp_alloc_scratches of the component xfrm. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: xfrm: Update ipcomp_scratches with NULL when freed Currently if ipcomp_alloc_scratches() fails to allocate memory ipcomp_scratches holds obsolete address. So when we try to free the percpu scratches using ipcomp_free_scratches() it tries to vfree non existent vm area. Described below: static void * __percpu *ipcomp_alloc_scratches(void) { ... scratches = alloc_percpu(void *); if (!scratches) return NULL; ipcomp_scratches does not know about this allocation failure. Therefore holding the old obsolete address. ... } So when we free, static void ipcomp_free_scratches(void) { ... scratches = ipcomp_scratches; Assigning obsolete address from ipcomp_scratches if (!scratches) return; for_each_possible_cpu(i) vfree(*per_cpu_ptr(scratches, i)); Trying to free non existent page, causing warning: trying to vfree existent vm area. ... } Fix this breakage by updating ipcomp_scrtches with NULL when scratches is freed

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-50569 since 10/22/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 279908 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4515-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.9.331, 4.14.296, 4.19.262, 5.4.220, 5.10.150, 5.15.75, 5.19.17 or 6.0.3 eliminates this vulnerability. Applying the patch debca61df6bc2f65e020656c9c5b878d6b38d30f/a39f456d62810c0efb43cead22f98d95b53e4b1a/1e8abde895b3ac6a368cbdb372e8800c49e73a28/18373ed500f7cd53e24d9b0bd0f1c09d78dba87e/be81c44242b20fc3bdcc73480ef8aaee56f5d0b6/03155680191ef0f004b1d6a5714c5b8cd271ab61/f3bdba4440d82e0da2b1bfc35d3836c8a8e00677/2c19945ce8095d065df550e7fe350cd5cc40c6e6/8a04d2fc700f717104bfb95b0f6694e448a4537f is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (279908) and CERT Bund (WID-SEC-2025-2394). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Red Hat Enterprise Linux
• SUSE Linux
• Oracle Linux
• Open Source Linux Kernel
• Dell NetWorker

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.9.330
• 4.14.295
• 4.19.261
• 5.4.219
• 5.10.149
• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.15.25
• 5.15.26
• 5.15.27
• 5.15.28
• 5.15.29
• 5.15.30
• 5.15.31
• 5.15.32
• 5.15.33
• 5.15.34
• 5.15.35
• 5.15.36
• 5.15.37
• 5.15.38
• 5.15.39
• 5.15.40
• 5.15.41
• 5.15.42
• 5.15.43
• 5.15.44
• 5.15.45
• 5.15.46
• 5.15.47
• 5.15.48
• 5.15.49
• 5.15.50
• 5.15.51
• 5.15.52
• 5.15.53
• 5.15.54
• 5.15.55
• 5.15.56
• 5.15.57
• 5.15.58
• 5.15.59
• 5.15.60
• 5.15.61
• 5.15.62
• 5.15.63
• 5.15.64
• 5.15.65
• 5.15.66
• 5.15.67
• 5.15.68
• 5.15.69
• 5.15.70
• 5.15.71
• 5.15.72
• 5.15.73
• 5.15.74
• 5.19.0
• 5.19.1
• 5.19.2
• 5.19.3
• 5.19.4
• 5.19.5
• 5.19.6
• 5.19.7
• 5.19.8
• 5.19.9
• 5.19.10
• 5.19.11
• 5.19.12
• 5.19.13
• 5.19.14
• 5.19.15
• 5.19.16
• 6.0.0
• 6.0.1
• 6.0.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 279908
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4515-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.9.331/4.14.296/4.19.262/5.4.220/5.10.150/5.15.75/5.19.17/6.0.3
Patch: debca61df6bc2f65e020656c9c5b878d6b38d30f/a39f456d62810c0efb43cead22f98d95b53e4b1a/1e8abde895b3ac6a368cbdb372e8800c49e73a28/18373ed500f7cd53e24d9b0bd0f1c09d78dba87e/be81c44242b20fc3bdcc73480ef8aaee56f5d0b6/03155680191ef0f004b1d6a5714c5b8cd271ab61/f3bdba4440d82e0da2b1bfc35d3836c8a8e00677/2c19945ce8095d065df550e7fe350cd5cc40c6e6/8a04d2fc700f717104bfb95b0f6694e448a4537f

Timelineinfo

10/22/2025 Advisory disclosed
10/22/2025 +0 days CVE reserved
10/22/2025 +0 days VulDB entry created
02/28/2026 +129 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-50569 (🔒)
GCVE (CVE): GCVE-0-2022-50569
GCVE (VulDB): GCVE-100-329328
CERT Bund: WID-SEC-2025-2394 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/22/2025 16:29
Updated: 02/28/2026 06:50
Changes: 10/22/2025 16:29 (59), 10/23/2025 22:07 (7), 12/26/2025 15:28 (2), 01/02/2026 04:02 (1), 02/28/2026 06:50 (1)
Complete: 🔍
Cache ID: 216::103

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Discussion

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