{"id":"CVE-2022-49870","title":"capabilities: fix undefined behavior in bit shift for CAP_TO_MASK","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncapabilities: fix undefined behavior in bit shift for CAP_TO_MASK\n\nShifting signed 32-bit value by 31 bits is undefined, so changing\nsignificant bit to unsigned. The UB…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 5b79fa628e2ab789e629a83cd211ef9b4c1a593e","Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 65b0bc7a0690861812ade523d19f82688ab819dc","Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < dbaab08c8677d598244d21afb7818e44e1c5d826","Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 5661f111a1616ac105ec8cec81bff99b60f847ac","Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < fcbd2b336834bd24e1d9454ad5737856470c10d7","Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 151dc8087b5609e53b069c068e3f3ee100efa586","Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 27bdb134c043ff32c459d98f16550d0ffa0b3c34","Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13","Linux 2.6.25"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T19:50:57.705224Z"},"published":"2025-05-01","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:00:10.236Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-49870","references":[{"url":"https://git.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593e"},{"url":"https://git.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dc"},{"url":"https://git.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826"},{"url":"https://git.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847ac"},{"url":"https://git.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7"},{"url":"https://git.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586"},{"url":"https://git.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34"},{"url":"https://git.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13"}],"tags":["cve.org"],"epss":0.00223,"epssPercentile":0.13036,"ingestedAt":"2026-11-05T22:38:31.620Z","slug":"CVE-2022-49870","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncapabilities: fix undefined behavior in bit shift for CAP_TO_MASK\n\nShifting signed 32-bit value by 31 bits is undefined, so changing\nsignificant bit to unsigned. The UBSAN warning calltrace like below:\n\nUBSAN: shift-out-of-bounds in security/commoncap.c:1252:2\nleft shift of 1 by 31 places cannot be represented in type 'int'\nCall Trace:\n <TASK>\n dump_stack_lvl+0x7d/0xa5\n dump_stack+0x15/0x1b\n ubsan_epilogue+0xe/0x4e\n __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c\n cap_task_prctl+0x561/0x6f0\n security_task_prctl+0x5a/0xb0\n __x64_sys_prctl+0x61/0x8f0\n do_syscall_64+0x58/0x80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n </TASK>\n\n## Affected\n\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 5b79fa628e2ab789e629a83cd211ef9b4c1a593e`\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 65b0bc7a0690861812ade523d19f82688ab819dc`\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < dbaab08c8677d598244d21afb7818e44e1c5d826`\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 5661f111a1616ac105ec8cec81bff99b60f847ac`\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < fcbd2b336834bd24e1d9454ad5737856470c10d7`\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 151dc8087b5609e53b069c068e3f3ee100efa586`\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 27bdb134c043ff32c459d98f16550d0ffa0b3c34`\n- `Linux >= e338d263a76af78fe8f38a72131188b58fceb591 < 46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13`\n- `Linux 2.6.25`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}