Linux Kernel up to 5.17.13/5.18.2 /dev/vdc parse_apply_sb_mount_options memory leak

CVSS Meta Temp Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 5.17.13/5.18.2. This affects the function parse_apply_sb_mount_options of the file /dev/vdc. The manipulation results in memory leak. This vulnerability is cataloged as CVE-2022-49408. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.17.13/5.18.2. It has been classified as critical. Affected is the function parse_apply_sb_mount_options of the file /dev/vdc. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in parse_apply_sb_mount_options() If processing the on-disk mount options fails after any memory was allocated in the ext4_fs_context, e.g. s_qf_names, then this memory is leaked. Fix this by calling ext4_fc_free() instead of kfree() directly. Reproducer: mkfs.ext4 -F /dev/vdc tune2fs /dev/vdc -E mount_opts=usrjquota=file echo clear > /sys/kernel/debug/kmemleak mount /dev/vdc /vdc echo scan > /sys/kernel/debug/kmemleak sleep 5 echo scan > /sys/kernel/debug/kmemleak cat /sys/kernel/debug/kmemleak

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-49408 since 02/26/2025. There are known technical details, but no exploit is available.

Upgrading to version 5.17.14 or 5.18.3 eliminates this vulnerability. Applying the patch 9ea3e6168948189cec31d0678d2b55b395f88491/f92ded66e9d0aa20b883a2a5183973abc8f41815/c069db76ed7b681c69159f44be96d2137e9ca989 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.17.14/5.18.3
Patch: 9ea3e6168948189cec31d0678d2b55b395f88491/f92ded66e9d0aa20b883a2a5183973abc8f41815/c069db76ed7b681c69159f44be96d2137e9ca989

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49408 (🔍)
GCVE (CVE): GCVE-0-2022-49408
GCVE (VulDB): GCVE-100-297024

Entryinfo

Created: 02/26/2025 09:48
Changes: 02/26/2025 09:48 (59)
Complete: 🔍
Cache ID: 216::103

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