{"id":"CVE-2022-50504","title":"powerpc/rtas: avoid scheduling in rtas_os_term()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/rtas: avoid scheduling in rtas_os_term()\n\nIt's unsafe to use rtas_busy_delay() to handle a busy status from\nthe ibm,os-term RTAS function in rtas_os_term():\n\nKe…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < f413135b337c4e90c1e593c6613f8717e17bc724","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 4768935b8cc2d2afeb7956292df0f6e2c49ca0a5","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < ffa991a003abb4f8cb9e5004646bfe2d9a46912c","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 515959eb49e6d218a46979d66f36fdef329ac7d2","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 6f7e2fcab73372a371ab4017cbedf7a71f4f9b40","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < bed48651c87bef59ea1a9d6dbc381bcbc452f4ff","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 482d990a5dd1027ee0b70a8a570d56749cac8103","Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4","Linux 2.6.18"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:12:32.770440Z"},"published":"2025-10-04","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:20:49.751Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-50504","references":[{"url":"https://git.kernel.org/stable/c/f413135b337c4e90c1e593c6613f8717e17bc724"},{"url":"https://git.kernel.org/stable/c/4768935b8cc2d2afeb7956292df0f6e2c49ca0a5"},{"url":"https://git.kernel.org/stable/c/ffa991a003abb4f8cb9e5004646bfe2d9a46912c"},{"url":"https://git.kernel.org/stable/c/515959eb49e6d218a46979d66f36fdef329ac7d2"},{"url":"https://git.kernel.org/stable/c/6f7e2fcab73372a371ab4017cbedf7a71f4f9b40"},{"url":"https://git.kernel.org/stable/c/7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7"},{"url":"https://git.kernel.org/stable/c/bed48651c87bef59ea1a9d6dbc381bcbc452f4ff"},{"url":"https://git.kernel.org/stable/c/482d990a5dd1027ee0b70a8a570d56749cac8103"},{"url":"https://git.kernel.org/stable/c/6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4"}],"tags":["cve.org"],"epss":0.00163,"epssPercentile":0.0556,"ingestedAt":"2026-11-05T22:38:31.743Z","slug":"CVE-2022-50504","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/rtas: avoid scheduling in rtas_os_term()\n\nIt's unsafe to use rtas_busy_delay() to handle a busy status from\nthe ibm,os-term RTAS function in rtas_os_term():\n\nKernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b\nBUG: sleeping function called from invalid context at arch/powerpc/kernel/rtas.c:618\nin_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1, name: swapper/0\npreempt_count: 2, expected: 0\nCPU: 7 PID: 1 Comm: swapper/0 Tainted: G      D            6.0.0-rc5-02182-gf8553a572277-dirty #9\nCall Trace:\n[c000000007b8f000] [c000000001337110] dump_stack_lvl+0xb4/0x110 (unreliable)\n[c000000007b8f040] [c0000000002440e4] __might_resched+0x394/0x3c0\n[c000000007b8f0e0] [c00000000004f680] rtas_busy_delay+0x120/0x1b0\n[c000000007b8f100] [c000000000052d04] rtas_os_term+0xb8/0xf4\n[c000000007b8f180] [c0000000001150fc] pseries_panic+0x50/0x68\n[c000000007b8f1f0] [c000000000036354] ppc_panic_platform_handler+0x34/0x50\n[c000000007b8f210] [c0000000002303c4] notifier_call_chain+0xd4/0x1c0\n[c000000007b8f2b0] [c0000000002306cc] atomic_notifier_call_chain+0xac/0x1c0\n[c000000007b8f2f0] [c0000000001d62b8] panic+0x228/0x4d0\n[c000000007b8f390] [c0000000001e573c] do_exit+0x140c/0x1420\n[c000000007b8f480] [c0000000001e586c] make_task_dead+0xdc/0x200\n\nUse rtas_busy_delay_time() instead, which signals without side effects\nwhether to attempt the ibm,os-term RTAS call again.\n\n## Affected\n\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < f413135b337c4e90c1e593c6613f8717e17bc724`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 4768935b8cc2d2afeb7956292df0f6e2c49ca0a5`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < ffa991a003abb4f8cb9e5004646bfe2d9a46912c`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 515959eb49e6d218a46979d66f36fdef329ac7d2`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 6f7e2fcab73372a371ab4017cbedf7a71f4f9b40`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < bed48651c87bef59ea1a9d6dbc381bcbc452f4ff`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 482d990a5dd1027ee0b70a8a570d56749cac8103`\n- `Linux >= 507279db1819aacf4022e790b3fc8bc8cf56debf < 6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4`\n- `Linux 2.6.18`\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":[]}