| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: perf: Do not broadcast to other cpus when starting a counter\n\nThis command:\n\n$ perf record -e cycles:k -e instructions:k -c 10000 -m 64M dd if=/dev/zero of=/dev/null count=1000\n\ngives rise to this kernel warning:\n\n[ 444.364395] WARNING: CPU: 0 PID: 104 at kernel/smp.c:775 smp_call_function_many_cond+0x42c/0x436\n[ 444.364515] Modules linked in:\n[ 444.364657] CPU: 0 PID: 104 Comm: perf-exec Not tainted 6.6.0-rc6-00051-g391df82e8ec3-dirty #73\n[ 444.364771] Hardware name: riscv-virtio,qemu (DT)\n[ 444.364868] epc : smp_call_function_many_cond+0x42c/0x436\n[ 444.364917] ra : on_each_cpu_cond_mask+0x20/0x32\n[ 444.364948] epc : ffffffff8009f9e0 ra : ffffffff8009fa5a sp : ff20000000003800\n[ 444.364966] gp : ffffffff81500aa0 tp : ff60000002b83000 t0 : ff200000000038c0\n[ 444.364982] t1 : ffffffff815021f0 t2 : 000000000000001f s0 : ff200000000038b0\n[ 444.364998] s1 : ff60000002c54d98 a0 : ff60000002a73940 a1 : 0000000000000000\n[ 444.365013] a2 : 0000000000000000 a3 : 0000000000000003 a4 : 0000000000000100\n[ 444.365029] a5 : 0000000000010100 a6 : 0000000000f00000 a7 : 0000000000000000\n[ 444.365044] s2 : 0000000000000000 s3 : ffffffffffffffff s4 : ff60000002c54d98\n[ 444.365060] s5 : ffffffff81539610 s6 : ffffffff80c20c48 s7 : 0000000000000000\n[ 444.365075] s8 : 0000000000000000 s9 : 0000000000000001 s10: 0000000000000001\n[ 444.365090] s11: ffffffff80099394 t3 : 0000000000000003 t4 : 00000000eac0c6e6\n[ 444.365104] t5 : 0000000400000000 t6 : ff60000002e010d0\n[ 444.365120] status: 0000000200000100 badaddr: 0000000000000000 cause: 0000000000000003\n[ 444.365226] [<ffffffff8009f9e0>] smp_call_function_many_cond+0x42c/0x436\n[ 444.365295] [<ffffffff8009fa5a>] on_each_cpu_cond_mask+0x20/0x32\n[ 444.365311] [<ffffffff806e90dc>] pmu_sbi_ctr_start+0x7a/0xaa\n[ 444.365327] [<ffffffff806e880c>] riscv_pmu_start+0x48/0x66\n[ 444.365339] [<ffffffff8012111a>] perf_adjust_freq_unthr_context+0x196/0x1ac\n[ 444.365356] [<ffffffff801237aa>] perf_event_task_tick+0x78/0x8c\n[ 444.365368] [<ffffffff8003faf4>] scheduler_tick+0xe6/0x25e\n[ 444.365383] [<ffffffff8008a042>] update_process_times+0x80/0x96\n[ 444.365398] [<ffffffff800991ec>] tick_sched_handle+0x26/0x52\n[ 444.365410] [<ffffffff800993e4>] tick_sched_timer+0x50/0x98\n[ 444.365422] [<ffffffff8008a6aa>] __hrtimer_run_queues+0x126/0x18a\n[ 444.365433] [<ffffffff8008b350>] hrtimer_interrupt+0xce/0x1da\n[ 444.365444] [<ffffffff806cdc60>] riscv_timer_interrupt+0x30/0x3a\n[ 444.365457] [<ffffffff8006afa6>] handle_percpu_devid_irq+0x80/0x114\n[ 444.365470] [<ffffffff80065b82>] generic_handle_domain_irq+0x1c/0x2a\n[ 444.365483] [<ffffffff8045faec>] riscv_intc_irq+0x2e/0x46\n[ 444.365497] [<ffffffff808a9c62>] handle_riscv_irq+0x4a/0x74\n[ 444.365521] [<ffffffff808aa760>] do_irq+0x7c/0x7e\n[ 444.365796] ---[ end trace 0000000000000000 ]---\n\nThat's because the fix in commit 3fec323339a4 (\"drivers: perf: Fix panic\nin riscv SBI mmap support\") was wrong since there is no need to broadcast\nto other cpus when starting a counter, that's only needed in mmap when\nthe counters could have already been started on other cpus, so simply\nremove this broadcast." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/perf/riscv_pmu_sbi.c" |
| ], |
| "versions": [ |
| { |
| "version": "3fec323339a4a9801a54e8b282eb571965b67b23", |
| "lessThan": "85be1a73fd298ed3fd060dfce97caef5f9928c57", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "3fec323339a4a9801a54e8b282eb571965b67b23", |
| "lessThan": "61e3d993c8bd3e80f8f1363ed5e04f88ab531b72", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/perf/riscv_pmu_sbi.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.6", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.6", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.2", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.7", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.6", |
| "versionEndExcluding": "6.6.2" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.6", |
| "versionEndExcluding": "6.7" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/85be1a73fd298ed3fd060dfce97caef5f9928c57" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/61e3d993c8bd3e80f8f1363ed5e04f88ab531b72" |
| } |
| ], |
| "title": "drivers: perf: Do not broadcast to other cpus when starting a counter", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2023-52839", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
