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CVE-2021-47589— igbvf: fix double free in `igbvf_probe`

AI Predicted 5.5 Difficulty: Moderate EPSS 0.01% · P3

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxd4e0fe01a38a073568aee541a0247fe734095979< ffe1695b678729edec04037e691007900a2b2bebaffected
d4e0fe01a38a073568aee541a0247fe734095979< 79d9b092035dcdbe636b70433149df9cc6db1e49affected
d4e0fe01a38a073568aee541a0247fe734095979< 8d0c927a9fb2b4065230936b77b54f857a3754fcaffected
d4e0fe01a38a073568aee541a0247fe734095979< cc9b655bb84f1be283293dfea94dff9a31b106acaffected
d4e0fe01a38a073568aee541a0247fe734095979< 8addba6cab94ce01686ea2e80ed1530f9dc33a9aaffected
d4e0fe01a38a073568aee541a0247fe734095979< 74a16e062b23332d8db017ff4a41e16279c44411affected
d4e0fe01a38a073568aee541a0247fe734095979< 944b8be08131f5faf2cd2440aa1c24a39a163a54affected
d4e0fe01a38a073568aee541a0247fe734095979< b6d335a60dc624c0d279333b22c737faa765b028affected
… +10 more rows
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I. Basic Information for CVE-2021-47589

Vulnerability Information
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Vulnerability Title
igbvf: fix double free in `igbvf_probe`
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: igbvf: fix double free in `igbvf_probe` In `igbvf_probe`, if register_netdev() fails, the program will go to label err_hw_init, and then to label err_ioremap. In free_netdev() which is just below label err_ioremap, there is `list_for_each_entry_safe` and `netif_napi_del` which aims to delete all entries in `dev->napi_list`. The program has added an entry `adapter->rx_ring->napi` which is added by `netif_napi_add` in igbvf_alloc_queues(). However, adapter->rx_ring has been freed below label err_hw_init. So this a UAF. In terms of how to patch the problem, we can refer to igbvf_remove() and delete the entry before `adapter->rx_ring`. The KASAN logs are as follows: [ 35.126075] BUG: KASAN: use-after-free in free_netdev+0x1fd/0x450 [ 35.127170] Read of size 8 at addr ffff88810126d990 by task modprobe/366 [ 35.128360] [ 35.128643] CPU: 1 PID: 366 Comm: modprobe Not tainted 5.15.0-rc2+ #14 [ 35.129789] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 35.131749] Call Trace: [ 35.132199] dump_stack_lvl+0x59/0x7b [ 35.132865] print_address_description+0x7c/0x3b0 [ 35.133707] ? free_netdev+0x1fd/0x450 [ 35.134378] __kasan_report+0x160/0x1c0 [ 35.135063] ? free_netdev+0x1fd/0x450 [ 35.135738] kasan_report+0x4b/0x70 [ 35.136367] free_netdev+0x1fd/0x450 [ 35.137006] igbvf_probe+0x121d/0x1a10 [igbvf] [ 35.137808] ? igbvf_vlan_rx_add_vid+0x100/0x100 [igbvf] [ 35.138751] local_pci_probe+0x13c/0x1f0 [ 35.139461] pci_device_probe+0x37e/0x6c0 [ 35.165526] [ 35.165806] Allocated by task 366: [ 35.166414] ____kasan_kmalloc+0xc4/0xf0 [ 35.167117] foo_kmem_cache_alloc_trace+0x3c/0x50 [igbvf] [ 35.168078] igbvf_probe+0x9c5/0x1a10 [igbvf] [ 35.168866] local_pci_probe+0x13c/0x1f0 [ 35.169565] pci_device_probe+0x37e/0x6c0 [ 35.179713] [ 35.179993] Freed by task 366: [ 35.180539] kasan_set_track+0x4c/0x80 [ 35.181211] kasan_set_free_info+0x1f/0x40 [ 35.181942] ____kasan_slab_free+0x103/0x140 [ 35.182703] kfree+0xe3/0x250 [ 35.183239] igbvf_probe+0x1173/0x1a10 [igbvf] [ 35.184040] local_pci_probe+0x13c/0x1f0
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，该漏洞源于双重释放。
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 d4e0fe01a38a073568aee541a0247fe734095979 ~ ffe1695b678729edec04037e691007900a2b2beb -
LinuxLinux 2.6.30 -

II. Public POCs for CVE-2021-47589

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III. Intelligence Information for CVE-2021-47589

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Other References for CVE-2021-47589 (6)

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-2021-47589

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