7.1

CVE-2022-49870

capabilities: fix undefined behavior in bit shift for CAP_TO_MASK

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>
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.25 < 4.9.334
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.300
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.267
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.225
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.155
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.79
Linux ≫ Linux Kernel Version >= 5.16 < 6.0.9
Linux ≫ Linux Kernel Version6.1 Updaterc1
Linux ≫ Linux Kernel Version6.1 Updaterc2
Linux ≫ Linux Kernel Version6.1 Updaterc3
Linux ≫ Linux Kernel Version6.1 Updaterc4
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.19% 0.089
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.1 1.8 5.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593e
Patch
https://git.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dc
Patch
https://git.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826
Patch
https://git.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847ac
Patch
https://git.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7
Patch
https://git.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586
Patch
https://git.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34
Patch
https://git.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13
Patch