9p: trans_fd/p9_conn_cancel: drop client lock earlier
Priority LOW 33CWE-667Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-667 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: 9p: trans_fd/p9_conn_cancel: drop client lock earlier syzbot reported a double-lock here and we no longer need this lock after requests have been moved off to local list: just drop the lock earlier.
Why it matters now
EPSS 0.00399 34th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.9.334, 4.14.300, 4.19 +6Red Hat: 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.9.127 to before 4.9.334; 4.14.70 to before 4.14.300; 4.18.8 to before 4.19 | 4.9.334, 4.14.300, 4.19 | Patch available | CNA |
| Linux | Linux | 4.19 and later | 4.9.334, 4.14.300, 4.19.267, 5.4.225, 5.10.156, 5.15.80, 6.0.10, 6.1 | Patch available | CNA |
- Linux VendorLinux Affected 4.9.127 to before 4.9.334; 4.14.70 to before 4.14.300; 4.18.8 to before 4.19 Fixed in 4.9.334, 4.14.300, 4.19 Patch available CNA
- Linux VendorLinux Affected 4.19 and later Fixed in 4.9.334, 4.14.300, 4.19.267, 5.4.225, 5.10.156, 5.15.80, 6.0.10, 6.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.9.127 to before 4.9.334; 4.14.70 to before 4.14.300; 4.18.8 to before 4.19.267; 4.20 to before 5.4.225; 5.5 to before 5.10.156; 5.11 to before 5.15.80; 5.16 to before 6.0.10 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.9.127 to before 4.9.334; 4.14.70 to before 4.14.300; 4.18.8 to before 4.19.267; 4.20 to before 5.4.225; 5.5 to before 5.10.156; 5.11 to before 5.15.80; 5.16 to before 6.0.10 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.9.334, 4.14.300, 4.19
- Fix · CNA Linux (Linux) Fixed in 4.9.334, 4.14.300, 4.19.267, 5.4.225, 5.10.156, 5.15.80, 6.0.10, 6.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
Not affected: 4 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49768
- 2026-10-03 Alias added: GHSA-6p36-94f3-3rfp
References
Patch 8
- https://git.kernel.org/stable/c/82825dbf393f7c7979d462f9609a15bde8092b3f
- https://git.kernel.org/stable/c/e3031280fe4eaf61a09e60823331f81f321be8e1
- https://git.kernel.org/stable/c/fec1406f5e7ab20b71f6d231792b0040e3300aaf
- https://git.kernel.org/stable/c/96760723aae1b45f733f702abb4333137143909f
- https://git.kernel.org/stable/c/f14858bc77c567e089965962877ee726ffad0556
- https://git.kernel.org/stable/c/a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd
- https://git.kernel.org/stable/c/612c977f5d481f551d03d83d0aef588845c1300c
- https://git.kernel.org/stable/c/52f1c45dde9136f964d63a77d19826c8a74e2c7f
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2022-49768 · CVE Program
- CVE-2022-49768 · NVD
- FIRST EPSS
- GHSA-6p36-94f3-3rfp · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49768 · Red Hat security data · CC BY 4.0
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