# CVE-2022-49859: linux: In the Linux kernel, the following vulnerability has been resolved:  net: lapbether: fix issue of invalid opcode in l...

CVE-2022-49859 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49859, released May 1, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-49859
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  net: lapbether: fix issue of invalid opcode in lapbeth_open()  If lapb_register() failed when lapb device goes to up for the first time, the NAPI is not disabled. As a result, the invalid opcode issue is reported when the lapb device goes to up for the second time.  The stack info is as follows: [ 1958.311422][T11356] kernel BUG at net/core/dev.c:6442! [ 1958.312206][T11356] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 1958.315979][T11356] RIP: 0010:napi_enable+0x16a/0x1f0 [ 1958.332310][T11356] Call Trace: [ 1958.332817][T11356]  <TASK> [ 1958.336135][T11356]  lapbeth_open+0x18/0x90 [ 1958.337446][T11356]  __dev_open+0x258/0x490 [ 1958.341672][T11356]  __dev_change_flags+0x4d4/0x6a0 [ 1958.345325][T11356]  dev_change_flags+0x93/0x160 [ 1958.346027][T11356]  devinet_ioctl+0x1276/0x1bf0 [ 1958.346738][T11356]  inet_ioctl+0x1c8/0x2d0 [ 1958.349638][T11356]  sock_ioctl+0x5d1/0x750 [ 1958.356059][T11356]  __x64_sys_ioctl+0x3ec/0x1790 [ 1958.365594][T11356]  do_syscall_64+0x35/0x80 [ 1958.366239][T11356]  entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 1958.377381][T11356]  </TASK>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.0.10-1 | [DEBIAN-CVE-2022-49859](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49859.md) | May 1, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.0.10-1 | [DEBIAN-CVE-2022-49859](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49859.md) | May 1, 2025 |
| Linux | linux Debian 14 | 6.0.10-1 | [DEBIAN-CVE-2022-49859](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49859.md) | May 1, 2025 |

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