CVE-2022-49366— ksmbd: fix reference count leak in smb_check_perm_dacl()
Possible ATT&CK Techniques 1AI
T1496 · Resource HijackingAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 777cad1604d68ed4379ec899d1f7d2f6a29f01f0< cf824b95c12a1abacadbc2d069931963221a3414 | affected |
777cad1604d68ed4379ec899d1f7d2f6a29f01f0< 248d71b440aef829f5cc5f6545ca113ef5062900 | affected | ||
777cad1604d68ed4379ec899d1f7d2f6a29f01f0< 9758a6653c27867d810de02b4e5697163dda9883 | affected | ||
777cad1604d68ed4379ec899d1f7d2f6a29f01f0< d21a580dafc69aa04f46e6099616146a536b0724 | affected | ||
5.15 | affected | ||
< 5.15 | unaffected | ||
5.15.47≤ 5.15.* | unaffected | ||
5.17.15≤ 5.17.* | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2022-49366
Vulnerability Information
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Vulnerability Title
ksmbd: fix reference count leak in smb_check_perm_dacl()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix reference count leak in smb_check_perm_dacl() The issue happens in a specific path in smb_check_perm_dacl(). When "id" and "uid" have the same value, the function simply jumps out of the loop without decrementing the reference count of the object "posix_acls", which is increased by get_acl() earlier. This may result in memory leaks. Fix it by decreasing the reference count of "posix_acls" before jumping to label "check_access_bits".
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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smb_check_perm_dacl函数在特定路径下未释放posix_acls的引用计数，可能导致内存泄漏。
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-2022-49366
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2022-49366 (4)
Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total
| CVE-2022-49561 | 9.8 CRITICAL | netfilter: conntrack: re-fetch conntrack after insertion |
| CVE-2022-49149 | 9.8 CRITICAL | rxrpc: Fix call timer start racing with call destruction |
| CVE-2022-49407 | 9.8 CRITICAL | dlm: fix plock invalid read |
| CVE-2022-49356 | 9.8 CRITICAL | SUNRPC: Trap RDMA segment overflows |
| CVE-2022-49362 | 9.8 CRITICAL | NFSD: Fix potential use-after-free in nfsd_file_put() |
| CVE-2022-49280 | 9.8 CRITICAL | NFSD: prevent underflow in nfssvc_decode_writeargs() |
| CVE-2022-49260 | 9.8 CRITICAL | crypto: hisilicon/sec - fix the aead software fallback for engine |
| CVE-2022-49418 | 9.8 CRITICAL | NFSv4: Fix free of uninitialized nfs4_label on referral lookup. |
| CVE-2022-49201 | 9.8 CRITICAL | ibmvnic: fix race between xmit and reset |
| CVE-2022-49194 | 9.8 CRITICAL | net: bcmgenet: Use stronger register read/writes to assure ordering |
| CVE-2022-49093 | 9.8 CRITICAL | skbuff: fix coalescing for page_pool fragment recycling |
| CVE-2022-49094 | 9.8 CRITICAL | net/tls: fix slab-out-of-bounds bug in decrypt_internal |
| CVE-2022-49058 | 9.1 CRITICAL | cifs: potential buffer overflow in handling symlinks |
| CVE-2022-49416 | 8.8 HIGH | wifi: mac80211: fix use-after-free in chanctx code |
| CVE-2022-49535 | 8.8 HIGH | scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI |
| CVE-2022-49238 | 8.8 HIGH | ath11k: free peer for station when disconnect from AP for QCA6390/WCN6855 |
| CVE-2022-49519 | 8.8 HIGH | ath10k: skip ath10k_halt during suspend for driver state RESTARTING |
| CVE-2022-49138 | 8.8 HIGH | Bluetooth: hci_event: Ignore multiple conn complete events |
| CVE-2022-49471 | 8.8 HIGH | rtw89: cfo: check mac_id to avoid out-of-bounds |
| CVE-2022-49159 | 8.8 HIGH | scsi: qla2xxx: Implement ref count for SRB |
Showing top 20 of 706 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74583
net/sched: cls_route: fix fastmap use-after-free on filter - CVE-2026-74581
net: ipv6: clear suppressed fib6 rule result - CVE-2026-74582
packet: use consistent hard_header_len in non-ring send path - CVE-2026-74580
vhost: reset the vring metadata cache on vring reconfigurati - CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off
Same vendor: Linux
- CVE-2026-74583
net/sched: cls_route: fix fastmap use-after-free on filter - CVE-2026-74581
net: ipv6: clear suppressed fib6 rule result - CVE-2026-74582
packet: use consistent hard_header_len in non-ring send path - CVE-2026-74580
vhost: reset the vring metadata cache on vring reconfigurati - CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off
V. Comments for CVE-2022-49366
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