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CVE-2021-47466— mm, slub: fix potential memoryleak in kmem_cache_open()

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.21% · P11

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinux210e7a43fa905bccafa9bb5966fba1d71f33eb8b< 4f5d1c29cfab5cb0ab885059818751bdef32e2bbaffected
210e7a43fa905bccafa9bb5966fba1d71f33eb8b< 568f906340b43120abd6fcc67c37396482f85930affected
210e7a43fa905bccafa9bb5966fba1d71f33eb8b< 42b81946e3ac9ea0372ba16e05160dc11e02694faffected
210e7a43fa905bccafa9bb5966fba1d71f33eb8b< 9037c57681d25e4dcc442d940d6dbe24dd31f461affected
4.8affected
< 4.8unaffected
5.4.156≤ 5.4.*unaffected
5.10.76≤ 5.10.*unaffected
… +2 more rows
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I. Basic Information for CVE-2021-47466

Vulnerability Information
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Vulnerability Title
mm, slub: fix potential memoryleak in kmem_cache_open()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm, slub: fix potential memoryleak in kmem_cache_open() In error path, the random_seq of slub cache might be leaked. Fix this by using __kmem_cache_release() to release all the relevant resources.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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kmem_cache_open函数中存在内存泄漏问题。
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 210e7a43fa905bccafa9bb5966fba1d71f33eb8b ~ 4f5d1c29cfab5cb0ab885059818751bdef32e2bb -
LinuxLinux 4.8 -

II. Public POCs for CVE-2021-47466

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III. Intelligence Information for CVE-2021-47466

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Other References for CVE-2021-47466 (4)

Same Patch Batch · Linux · 2024-05-22 · 63 CVEs total

CVE-2021-474969.8 CRITICALnet/tls: Fix flipped sign in tls_err_abort() calls
CVE-2021-474789.1 CRITICALisofs: Fix out of bound access for corrupted isofs image
CVE-2021-474508.8 HIGHKVM: arm64: Fix host stage-2 PGD refcount
CVE-2021-474338.1 HIGHbtrfs: fix abort logic in btrfs_replace_file_extents
CVE-2021-474517.8 HIGHnetfilter: xt_IDLETIMER: fix panic that occurs when timer_type has garbage value
CVE-2021-474597.8 HIGHcan: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv
CVE-2021-474837.8 HIGHregmap: Fix possible double-free in regcache_rbtree_exit()
CVE-2021-474617.8 HIGHuserfaultfd: fix a race between writeprotect and exit_mmap()
CVE-2021-474947.8 HIGHcfg80211: fix management registrations locking
CVE-2021-474937.8 HIGHocfs2: fix race between searching chunks and release journal_head from buffer_head
CVE-2021-474927.8 HIGHmm, thp: bail out early in collapse_file for writeback page
CVE-2021-474857.8 HIGHIB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields
CVE-2021-474467.8 HIGHdrm/msm/a4xx: fix error handling in a4xx_gpu_init()
CVE-2021-474477.8 HIGHdrm/msm/a3xx: fix error handling in a3xx_gpu_init()
CVE-2021-474487.5 HIGHmptcp: fix possible stall on recvmsg()
CVE-2021-474587.1 HIGHocfs2: mount fails with buffer overflow in strlen
CVE-2021-474657.1 HIGHKVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
CVE-2021-474387.1 HIGHnet/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path
CVE-2021-47477comedi: dt9812: fix DMA buffers on stack
CVE-2021-47475comedi: vmk80xx: fix transfer-buffer overflows

Showing top 20 of 63 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47466

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