CVE-2022-49870None▾ SunlitIn 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 UB…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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>
Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 5b79fa628e2ab789e629a83cd211ef9b4c1a593eLinux >= e338d263a76af78fe8f38a72131188b58fceb591 < 65b0bc7a0690861812ade523d19f82688ab819dcLinux >= e338d263a76af78fe8f38a72131188b58fceb591 < dbaab08c8677d598244d21afb7818e44e1c5d826Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 5661f111a1616ac105ec8cec81bff99b60f847acLinux >= e338d263a76af78fe8f38a72131188b58fceb591 < fcbd2b336834bd24e1d9454ad5737856470c10d7Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 151dc8087b5609e53b069c068e3f3ee100efa586Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 27bdb134c043ff32c459d98f16550d0ffa0b3c34Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13Linux 2.6.25Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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