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CVE-2021-47602— mac80211: track only QoS data frames for admission control

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P13

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux02219b3abca59fca81711bfe7ee78df7abad97ce< 69f054d6642c8f6173724ce17e7ee3ff66b8f682affected
02219b3abca59fca81711bfe7ee78df7abad97ce< 46b9e29db2012a4d2a40a26101862e002ccf387baffected
02219b3abca59fca81711bfe7ee78df7abad97ce< eed897a22230e3231a740eddd7d6d95ba476625faffected
02219b3abca59fca81711bfe7ee78df7abad97ce< 42d08e97b196479f593499e887a9ab81446a34b9affected
02219b3abca59fca81711bfe7ee78df7abad97ce< d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981aaffected
3.19affected
< 3.19unaffected
4.19.222≤ 4.19.*unaffected
… +4 more rows
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I. Basic Information for CVE-2021-47602

Vulnerability Information
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Vulnerability Title
mac80211: track only QoS data frames for admission control
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mac80211: track only QoS data frames for admission control For admission control, obviously all of that only works for QoS data frames, otherwise we cannot even access the QoS field in the header. Syzbot reported (see below) an uninitialized value here due to a status of a non-QoS nullfunc packet, which isn't even long enough to contain the QoS header. Fix this to only do anything for QoS data packets.
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，该漏洞源于在准入控制过程中，错误地跟踪了非QoS类型的数据帧。
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 02219b3abca59fca81711bfe7ee78df7abad97ce ~ 69f054d6642c8f6173724ce17e7ee3ff66b8f682 -
LinuxLinux 3.19 -

II. Public POCs for CVE-2021-47602

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III. Intelligence Information for CVE-2021-47602

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Other References for CVE-2021-47602 (5)

Same Patch Batch · Linux · 2024-06-19 · 122 CVEs total

CVE-2024-38612ipv6: sr: fix invalid unregister error path
CVE-2021-47584iocost: Fix divide-by-zero on donation from low hweight cgroup
CVE-2021-47582USB: core: Make do_proc_control() and do_proc_bulk() killable
CVE-2021-47583media: mxl111sf: change mutex_init() location
CVE-2021-47579ovl: fix warning in ovl_create_real()
CVE-2021-47580scsi: scsi_debug: Fix type in min_t to avoid stack OOB
CVE-2021-47578scsi: scsi_debug: Don't call kcalloc() if size arg is zero
CVE-2021-47576scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()
CVE-2021-47577io-wq: check for wq exit after adding new worker task_work
CVE-2024-38617kunit/fortify: Fix mismatched kvalloc()/vfree() usage
CVE-2024-38618ALSA: timer: Set lower bound of start tick time
CVE-2024-38616wifi: carl9170: re-fix fortified-memset warning
CVE-2024-38615cpufreq: exit() callback is optional
CVE-2024-38614openrisc: traps: Don't send signals to kernel mode threads
CVE-2024-38613m68k: Fix spinlock race in kernel thread creation
CVE-2024-38611media: i2c: et8ek8: Don't strip remove function when driver is builtin
CVE-2024-38603drivers/perf: hisi: hns3: Actually use devm_add_action_or_reset()
CVE-2024-38601ring-buffer: Fix a race between readers and resize checks
CVE-2024-38600ALSA: Fix deadlocks with kctl removals at disconnection
CVE-2024-38602ax25: Fix reference count leak issues of ax25_dev

Showing top 20 of 122 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47602

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