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CVE-2024-26840— cachefiles: fix memory leak in cachefiles_add_cache()

EPSS 0.02% · P6
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I. Basic Information for CVE-2024-26840

Vulnerability Information
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Vulnerability Title
cachefiles: fix memory leak in cachefiles_add_cache()
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 9ae326a69004dea8af2dae4fde58de27db700a8d ~ cb5466783793e66272624cf71925ae1d1ba32083 -
LinuxLinux 2.6.30 -

II. Public POCs for CVE-2024-26840

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III. Intelligence Information for CVE-2024-26840

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Same Patch Batch · Linux · 2024-04-17 · 100 CVEs total

CVE-2024-26884bpf: Fix hashtab overflow check on 32-bit arches
CVE-2024-26878quota: Fix potential NULL pointer dereference
CVE-2024-26874drm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip
CVE-2024-26873scsi: hisi_sas: Fix a deadlock issue related to automatic dump
CVE-2024-26872RDMA/srpt: Do not register event handler until srpt device is fully setup
CVE-2024-26871f2fs: fix NULL pointer dereference in f2fs_submit_page_write()
CVE-2024-26870NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102
CVE-2024-26875media: pvrusb2: fix uaf in pvr2_context_set_notify
CVE-2024-26882net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()
CVE-2024-26883bpf: Fix stackmap overflow check on 32-bit arches
CVE-2024-26881net: hns3: fix kernel crash when 1588 is received on HIP08 devices
CVE-2024-26885bpf: Fix DEVMAP_HASH overflow check on 32-bit arches
CVE-2024-26886Bluetooth: af_bluetooth: Fix deadlock
CVE-2024-26887Bluetooth: btusb: Fix memory leak
CVE-2024-26888Bluetooth: msft: Fix memory leak
CVE-2024-26889Bluetooth: hci_core: Fix possible buffer overflow
CVE-2024-26890Bluetooth: btrtl: fix out of bounds memory access
CVE-2024-26891iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected
CVE-2024-26892wifi: mt76: mt7921e: fix use-after-free in free_irq()
CVE-2024-26893firmware: arm_scmi: Fix double free in SMC transport cleanup path

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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