net/x25: Fix skb leak in x25_lapb_receive_frame()
Priority LOW 24CWE-401Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-401.
Summary
In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix skb leak in x25_lapb_receive_frame() x25_lapb_receive_frame() using skb_copy() to get a private copy of skb, the new skb should be freed in the undersized/fragmented skb error handling path. Otherwise there is a memory leak.
Why it matters now
EPSS 0.00202 10th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 3.1, 4.9.334, 4.14.300 +6
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 | 3.0.72 to before 3.1 | 3.1 | Patch available | CNA |
| Linux | Linux | 3.1 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 3.0.72 to before 3.1 Fixed in 3.1 Patch available CNA
- Linux VendorLinux Affected 3.1 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 · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.0.72 to before 3.1; 3.1.1 to before 4.9.334; 4.10 to before 4.14.300; 4.15 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:3.1:-:*:*:*:*:*:* | 3.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* | 6.1 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* | 6.1 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* | 6.1 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* | 6.1 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* | 6.1 rc5 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.0.72 to before 3.1; 3.1.1 to before 4.9.334; 4.10 to before 4.14.300; 4.15 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:3.1:-:*:*:*:*:*:* Versions 3.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* Versions 6.1 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* Versions 6.1 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* Versions 6.1 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* Versions 6.1 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* Versions 6.1 rc5 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 3.1
- 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
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49809
- 2026-10-03 Alias added: GHSA-mgh7-45p9-8c23
References
Patch 8
- https://git.kernel.org/stable/c/fda0ba7c84b46d10947c687320804b9de149a921
- https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81cff4e79b48502d97fda73118
- https://git.kernel.org/stable/c/0ef17d966445358a55c5f4ccf2c73cca3e39192b
- https://git.kernel.org/stable/c/e109b41870db995cae25dfaf0cc3922f9028b1a1
- https://git.kernel.org/stable/c/9f00da9c866d506998bf0a3f699ec900730472da
- https://git.kernel.org/stable/c/c8baf1fc248b2e88642f094fea9509a9bf98c5bb
- https://git.kernel.org/stable/c/2d675be16a461310d738d93f9f1a00da62055c5a
- https://git.kernel.org/stable/c/2929cceb2fcf0ded7182562e4888afafece82cce
More Linux Kernel vulnerabilities
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- 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-2022-49809 · CVE Program
- CVE-2022-49809 · NVD
- FIRST EPSS
- GHSA-mgh7-45p9-8c23 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49809 · Red Hat security data · CC BY 4.0
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