CVE-2022-49765— net/9p: use a dedicated spinlock for trans_fd
Possible ATT&CK Techniques 1AI
T1562Affected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 673d62cdaac6ffbce980a349d3174b3929ceb9e5< 43bbadb7e4636dc02f6a283c2a39e6438e6173cd | affected |
673d62cdaac6ffbce980a349d3174b3929ceb9e5< 717b9b4f38703d7f5293059e3a242d16f76fa045 | affected | ||
673d62cdaac6ffbce980a349d3174b3929ceb9e5< 296ab4a813841ba1d5f40b03190fd1bd8f25aab0 | affected | ||
2.6.28 | affected | ||
< 2.6.28 | unaffected | ||
5.15.80≤ 5.15.* | unaffected | ||
6.0.10≤ 6.0.* | unaffected | ||
6.1≤ * | unaffected |
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I. Basic Information for CVE-2022-49765
Vulnerability Information
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Vulnerability Title
net/9p: use a dedicated spinlock for trans_fd
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/9p: use a dedicated spinlock for trans_fd Shamelessly copying the explanation from Tetsuo Handa's suggested patch[1] (slightly reworded): syzbot is reporting inconsistent lock state in p9_req_put()[2], for p9_tag_remove() from p9_req_put() from IRQ context is using spin_lock_irqsave() on "struct p9_client"->lock but trans_fd (not from IRQ context) is using spin_lock(). Since the locks actually protect different things in client.c and in trans_fd.c, just replace trans_fd.c's lock by a new one specific to the transport (client.c's protect the idr for fid/tag allocations, while trans_fd.c's protects its own req list and request status field that acts as the transport's state machine)
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，该漏洞源于锁使用不当，可能导致竞争条件。
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-2022-49765
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2022-49765 (3)
Same Patch Batch · Linux · 2025-05-01 · 245 CVEs total
| CVE-2025-37750 | 9.8 CRITICAL | smb: client: fix UAF in decryption with multichannel |
| CVE-2025-37778 | 9.8 CRITICAL | ksmbd: Fix dangling pointer in krb_authenticate |
| CVE-2022-49770 | 9.8 CRITICAL | ceph: avoid putting the realm twice when decoding snaps fails |
| CVE-2022-49931 | 8.8 HIGH | IB/hfi1: Correctly move list in sc_disable() |
| CVE-2025-37776 | 8.8 HIGH | ksmbd: fix use-after-free in smb_break_all_levII_oplock() |
| CVE-2025-37777 | 8.8 HIGH | ksmbd: fix use-after-free in __smb2_lease_break_noti() |
| CVE-2025-37790 | 8.8 HIGH | net: mctp: Set SOCK_RCU_FREE |
| CVE-2022-49910 | 8.8 HIGH | Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu |
| CVE-2022-49886 | 8.4 HIGH | x86/tdx: Panic on bad configs that #VE on "private" memory access |
| CVE-2025-23159 | 8.4 HIGH | media: venus: hfi: add a check to handle OOB in sfr region |
| CVE-2025-37749 | 8.2 HIGH | net: ppp: Add bound checking for skb data on ppp_sync_txmung |
| CVE-2025-37765 | 7.8 HIGH | drm/nouveau: prime: fix ttm_bo_delayed_delete oops |
| CVE-2025-37779 | 7.8 HIGH | lib/iov_iter: fix to increase non slab folio refcount |
| CVE-2022-49920 | 7.8 HIGH | netfilter: nf_tables: netlink notifier might race to release objects |
| CVE-2022-49919 | 7.8 HIGH | netfilter: nf_tables: release flow rule object from commit path |
| CVE-2022-49921 | 7.8 HIGH | net: sched: Fix use after free in red_enqueue() |
| CVE-2025-37752 | 7.8 HIGH | net_sched: sch_sfq: move the limit validation |
| CVE-2025-37756 | 7.8 HIGH | net: tls: explicitly disallow disconnect |
| CVE-2025-37761 | 7.8 HIGH | drm/xe: Fix an out-of-bounds shift when invalidating TLB |
| CVE-2022-49804 | 7.8 HIGH | s390: avoid using global register for current_stack_pointer |
Showing top 20 of 245 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2022-49765
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