Riskcovery

CVE-2022-49859

net: lapbether: fix issue of invalid opcode in lapbeth_open()

State
Published
Severity
Not scored
Published
May 1, 2025
Updated
May 11, 2026
Reserved
May 1, 2025

Read the record on cve.org

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>

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 514e1150da9cd8d7978d990a353636cf1a7a87c2 to before 4689bd3a1b23a1bd917899e63b81bca2ccdfab45Affected
  • 514e1150da9cd8d7978d990a353636cf1a7a87c2 to before ed4940050a7ce7fc2ccd51db580ef1ade64290b1Affected
  • 514e1150da9cd8d7978d990a353636cf1a7a87c2 to before 3faf7e14ec0c3462c2d747fa6793b8645d1391dfAffected
LinuxLinux
  • 5.13Affected
  • before 5.13Not affected
  • 5.15.79 through 5.15.*Not affected
  • 6.0.9 through 6.0.*Not affected
  • 6.1 and laterNot affected

References

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