linux: In the Linux kernel, the following vulnerability has been resolved: capabilities: fix undefined behavior in bit shif...
CVE-2022-49870 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49870, released May 1, 2025. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: capabilities: fix undefined behavior in bit shift for CAP_TO_MASK Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in security/commoncap.c:1252:2 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c cap_task_prctl+0x561/0x6f0 security_task_prctl+0x5a/0xb0 __x64_sys_prctl+0x61/0x8f0 do_syscall_64+0x58/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.0.10-1 | DEBIAN-CVE-2022-49870 | May 1, 2025 |
| linux · Debian 13.5 (trixie) | 6.0.10-1 | DEBIAN-CVE-2022-49870 | May 1, 2025 |
| linux · Debian 14 | 6.0.10-1 | DEBIAN-CVE-2022-49870 | May 1, 2025 |
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