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CVE-2021-47521— can: sja1000: fix use after free in ems_pcmcia_add_card()

EPSS 0.02% · P5

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxfd734c6f25aea4b2b44b045e489aec67b388577e< cbd86110546f7f730a1f5d7de56c944a336c15c4affected
fd734c6f25aea4b2b44b045e489aec67b388577e< 1dd5b819f7e406dc15bbc7670596ff25261aaa2aaffected
fd734c6f25aea4b2b44b045e489aec67b388577e< c8718026ba287168ff9ad0ccc4f9a413062cba36affected
fd734c6f25aea4b2b44b045e489aec67b388577e< ccf070183e4655824936c0f96c4a2bcca93419aaaffected
fd734c6f25aea4b2b44b045e489aec67b388577e< 1a295fea90e1acbe80c6d4940f5ff856edcd6becaffected
fd734c6f25aea4b2b44b045e489aec67b388577e< 923f4dc5df679f678e121c20bf2fd70f7bf3e288affected
fd734c6f25aea4b2b44b045e489aec67b388577e< 474f9a8534f5f89841240a7e978bafd6e1e039ceaffected
fd734c6f25aea4b2b44b045e489aec67b388577e< 3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45affected
… +10 more rows
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I. Basic Information for CVE-2021-47521

Vulnerability Information
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Vulnerability Title
can: sja1000: fix use after free in ems_pcmcia_add_card()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: sja1000: fix use after free in ems_pcmcia_add_card() If the last channel is not available then "dev" is freed. Fortunately, we can just use "pdev->irq" instead. Also we should check if at least one channel was set up.
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，该漏洞源于存在释放后重用。
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 fd734c6f25aea4b2b44b045e489aec67b388577e ~ cbd86110546f7f730a1f5d7de56c944a336c15c4 -
LinuxLinux 3.2 -

II. Public POCs for CVE-2021-47521

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III. Intelligence Information for CVE-2021-47521

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Same Patch Batch · Linux · 2024-05-24 · 73 CVEs total

CVE-2021-47549sata_fsl: fix UAF in sata_fsl_port_stop when rmmod sata_fsl
CVE-2021-47569io_uring: fail cancellation for EXITING tasks
CVE-2021-47567powerpc/32: Fix hardlockup on vmap stack overflow
CVE-2021-47554vdpa_sim: avoid putting an uninitialized iova_domain
CVE-2021-47555net: vlan: fix underflow for the real_dev refcnt
CVE-2021-47553sched/scs: Reset task stack state in bringup_cpu()
CVE-2021-47551drm/amd/amdkfd: Fix kernel panic when reset failed and been triggered again
CVE-2021-47552blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release()
CVE-2021-47550drm/amd/amdgpu: fix potential memleak
CVE-2021-47548ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst
CVE-2021-47556ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()
CVE-2021-47547net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound
CVE-2021-47546ipv6: fix memory leak in fib6_rule_suppress
CVE-2021-47544tcp: fix page frag corruption on page fault
CVE-2021-47542net: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings()
CVE-2021-47541net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources()
CVE-2021-47540mt76: mt7915: fix NULL pointer dereference in mt7915_get_phy_mode
CVE-2021-47539rxrpc: Fix rxrpc_peer leak in rxrpc_look_up_bundle()
CVE-2021-47538rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer()
CVE-2021-47536net/smc: fix wrong list_del in smc_lgr_cleanup_early

Showing top 20 of 73 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47521

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