CVE-2024-26840
Linux Kernel cachefiles Memory Leak
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.
INFO
Published Date :
April 17, 2024, 10:15 a.m.
Last Modified :
Jan. 7, 2025, 5:13 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to a patched version.
- Reboot the system to apply the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26840.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26840 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26840
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-26840 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26840 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 07, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NIST CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.30 up to (excluding) 4.19.309 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.271 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.212 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.151 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.80 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.7 *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285 No Types Assigned https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285 Patch Changed Reference Type https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285 No Types Assigned https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285 Patch Changed Reference Type https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3 No Types Assigned https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3 Patch Changed Reference Type https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3 No Types Assigned https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3 Patch Changed Reference Type https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8 No Types Assigned https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8 Patch Changed Reference Type https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8 No Types Assigned https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8 Patch Changed Reference Type https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58 No Types Assigned https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58 Patch Changed Reference Type https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58 No Types Assigned https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58 Patch Changed Reference Type https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579 No Types Assigned https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579 Patch Changed Reference Type https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579 No Types Assigned https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579 Patch Changed Reference Type https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a No Types Assigned https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a Patch Changed Reference Type https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a No Types Assigned https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a Patch Changed Reference Type https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083 No Types Assigned https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083 Patch Changed Reference Type https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083 No Types Assigned https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083 Patch Changed Reference Type https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444 No Types Assigned https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444 Patch Changed Reference Type https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444 No Types Assigned https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444 Patch Changed Reference Type https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html No Types Assigned https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Mailing List Changed Reference Type https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html No Types Assigned https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Mailing List -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285 Added Reference https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3 Added Reference https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8 Added Reference https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58 Added Reference https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579 Added Reference https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a Added Reference https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083 Added Reference https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444 Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 05, 2024
Action Type Old Value New Value Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 27, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 17, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444 [No types assigned]