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CVE-2022-50243— sctp: handle the error returned from sctp_auth_asoc_init_active_key

EPSS 0.02% · P4

Affected Version Matrix 17

VendorProductVersion RangeStatus
LinuxLinux50b57223da67653c61e405d0a7592355cfe4585e< b8fa99a3a11bdd77fef6b4a97f1021eb30b5ba40affected
b60461696a0b0fdaf240bc365b7983698f88ded2< 382ff44716603a54f5fd238ddec6a2468e217612affected
8eb225873246312660ccd68296959a7b213d0cdd< f65955340e0044f5c41ac799a01698ac7dee8a4eaffected
58acd10092268831e49de279446c314727101292< 19d636b663e0e92951bba5fced929ca7fd25c552affected
58acd10092268831e49de279446c314727101292< 0f90099d18e3abdc01babf686f41f63fe04939c1affected
58acd10092268831e49de279446c314727101292< 3b0fcf5e29c0940e1169ce9c44f73edd98bdf12daffected
58acd10092268831e49de279446c314727101292< 022152aaebe116a25c39818a07e175a8cd3c1e11affected
c1de376423a7759bf4fa25d6a038a4c1e035c9e1affected
… +9 more rows
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I. Basic Information for CVE-2022-50243

Vulnerability Information
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Vulnerability Title
sctp: handle the error returned from sctp_auth_asoc_init_active_key
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sctp: handle the error returned from sctp_auth_asoc_init_active_key When it returns an error from sctp_auth_asoc_init_active_key(), the active_key is actually not updated. The old sh_key will be freeed while it's still used as active key in asoc. Then an use-after-free will be triggered when sending patckets, as found by syzbot: sctp_auth_shkey_hold+0x22/0xa0 net/sctp/auth.c:112 sctp_set_owner_w net/sctp/socket.c:132 [inline] sctp_sendmsg_to_asoc+0xbd5/0x1a20 net/sctp/socket.c:1863 sctp_sendmsg+0x1053/0x1d50 net/sctp/socket.c:2025 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 This patch is to fix it by not replacing the sh_key when it returns errors from sctp_auth_asoc_init_active_key() in sctp_auth_set_key(). For sctp_auth_set_active_key(), old active_key_id will be set back to asoc->active_key_id when the same thing happens.
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sctp_auth_asoc_init_active_key错误处理不当，可能导致释放后重用。
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 50b57223da67653c61e405d0a7592355cfe4585e ~ b8fa99a3a11bdd77fef6b4a97f1021eb30b5ba40 -
LinuxLinux 5.14 -

II. Public POCs for CVE-2022-50243

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III. Intelligence Information for CVE-2022-50243

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50293btrfs: do not BUG_ON() on ENOMEM when dropping extent items for a range
CVE-2023-53232mt76: mt7921: fix kernel panic by accessing unallocated eeprom.data
CVE-2023-53233net/smc: fix deadlock triggered by cancel_delayed_work_syn()
CVE-2023-53234watchdog: Fix kmemleak in watchdog_cdev_register
CVE-2023-53235drm/tests: helpers: Avoid a driver uaf
CVE-2023-53236iommufd: Do not corrupt the pfn list when doing batch carry
CVE-2023-53237drm/amdgpu: fix amdgpu_irq_put call trace in gmc_v11_0_hw_fini
CVE-2023-53238phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe()
CVE-2023-53239drm/msm/mdp5: Add check for kzalloc
CVE-2023-53240xsk: check IFF_UP earlier in Tx path
CVE-2023-53241nfsd: call op_release, even when op_func returns an error
CVE-2023-53242thermal/drivers/hisi: Drop second sensor hi3660
CVE-2022-50291kcm: annotate data-races around kcm->rx_psock
CVE-2022-50292drm/msm/dp: fix bridge lifetime
CVE-2022-50303drm/amdkfd: Fix double release compute pasid
CVE-2022-50300btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
CVE-2022-50301iommu/omap: Fix buffer overflow in debugfs
CVE-2022-50302lockd: set other missing fields when unlocking files
CVE-2022-50299md: Replace snprintf with scnprintf
CVE-2022-50304mtd: core: fix possible resource leak in init_mtd()

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50243

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