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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-26840 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix memory leak in cachefiles_add_cache() The following memory leak was reported after unbinding /dev/cachefiles: ================================================================== unreferenced object 0xffff9b674176e3c0 (size 192): comm "cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ea38a44b): [<ffffffff8eb8a1a5>] kmem_cache_alloc+0x2d5/0x370 [<ffffffff8e917f86>] prepare_creds+0x26/0x2e0 [<ffffffffc002eeef>] cachefiles_determine_cache_security+0x1f/0x120 [<ffffffffc00243ec>] cachefiles_add_cache+0x13c/0x3a0 [<ffffffffc0025216>] cachefiles_daemon_write+0x146/0x1c0 [<ffffffff8ebc4a3b>] vfs_write+0xcb/0x520 [<ffffffff8ebc5069>] ksys_write+0x69/0xf0 [<ffffffff8f6d4662>] do_syscall_64+0x72/0x140 [<ffffffff8f8000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 ================================================================== Put the reference count of cache_cred in cachefiles_daemon_unbind() to fix the problem. And also put cache_cred in cachefiles_add_cache() error branch to avoid memory leaks.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285
https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3
https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8
https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58
https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579
https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a
https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083
https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444

Weakness Enumeration

CWE-ID CWE Name Source

Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-26840
NVD Published Date:
04/17/2024
NVD Last Modified:
11/05/2024
Source:
kernel.org