CVE-2021-47596— net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg
Affected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | d8355240cf8fb8b9e002b5c8458578435cea85c2< 12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 | affected |
d8355240cf8fb8b9e002b5c8458578435cea85c2< 4f4a353f6fe033807cd026a5de81c67469ff19b0 | affected | ||
d8355240cf8fb8b9e002b5c8458578435cea85c2< 27cbf64a766e86f068ce6214f04c00ceb4db1af4 | affected | ||
5.8 | affected | ||
< 5.8 | unaffected | ||
5.10.88≤ 5.10.* | unaffected | ||
5.15.11≤ 5.15.* | unaffected | ||
5.16≤ * | unaffected |
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I. Basic Information for CVE-2021-47596
Vulnerability Information
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Vulnerability Title
net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg Currently, the hns3_remove function firstly uninstall client instance, and then uninstall acceletion engine device. The netdevice is freed in client instance uninstall process, but acceletion engine device uninstall process still use it to trace runtime information. This causes a use after free problem. So fixes it by check the instance register state to avoid use after free.
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net hns3 hclgevf_send_mbx_msg中存在释放后重用。
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
II. Public POCs for CVE-2021-47596
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-47596 (3)
Same Patch Batch · Linux · 2024-06-19 · 122 CVEs total
| CVE-2024-38612 | ipv6: sr: fix invalid unregister error path | |
| CVE-2021-47584 | iocost: Fix divide-by-zero on donation from low hweight cgroup | |
| CVE-2021-47582 | USB: core: Make do_proc_control() and do_proc_bulk() killable | |
| CVE-2021-47583 | media: mxl111sf: change mutex_init() location | |
| CVE-2021-47579 | ovl: fix warning in ovl_create_real() | |
| CVE-2021-47580 | scsi: scsi_debug: Fix type in min_t to avoid stack OOB | |
| CVE-2021-47578 | scsi: scsi_debug: Don't call kcalloc() if size arg is zero | |
| CVE-2021-47576 | scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select() | |
| CVE-2021-47577 | io-wq: check for wq exit after adding new worker task_work | |
| CVE-2024-38617 | kunit/fortify: Fix mismatched kvalloc()/vfree() usage | |
| CVE-2024-38618 | ALSA: timer: Set lower bound of start tick time | |
| CVE-2024-38616 | wifi: carl9170: re-fix fortified-memset warning | |
| CVE-2024-38615 | cpufreq: exit() callback is optional | |
| CVE-2024-38614 | openrisc: traps: Don't send signals to kernel mode threads | |
| CVE-2024-38613 | m68k: Fix spinlock race in kernel thread creation | |
| CVE-2024-38611 | media: i2c: et8ek8: Don't strip remove function when driver is builtin | |
| CVE-2024-38603 | drivers/perf: hisi: hns3: Actually use devm_add_action_or_reset() | |
| CVE-2024-38601 | ring-buffer: Fix a race between readers and resize checks | |
| CVE-2024-38600 | ALSA: Fix deadlocks with kctl removals at disconnection | |
| CVE-2024-38602 | ax25: Fix reference count leak issues of ax25_dev |
Showing top 20 of 122 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-45846
bareudp: fix NULL pointer dereference in bareudp_fill_metada - CVE-2026-45845
net/sched: taprio: fix NULL pointer dereference in class dum - CVE-2026-45844
netfilter: arp_tables: fix IEEE1394 ARP payload parsing - CVE-2026-45843
slip: bound decode() reads against the compressed packet len - CVE-2026-45842
slip: reject VJ receive packets on instances with no rstate
Same vendor: Linux
- CVE-2026-45846
bareudp: fix NULL pointer dereference in bareudp_fill_metada - CVE-2026-45845
net/sched: taprio: fix NULL pointer dereference in class dum - CVE-2026-45844
netfilter: arp_tables: fix IEEE1394 ARP payload parsing - CVE-2026-45843
slip: bound decode() reads against the compressed packet len - CVE-2026-45842
slip: reject VJ receive packets on instances with no rstate
V. Comments for CVE-2021-47596
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