{"cve":"CVE-2023-52797","nvd":{"published":"2024-05-21T16:15:18.230","modified":"2026-06-17T06:43:36.143","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: perf: Check find_first_bit() return value\n\nWe must check the return value of find_first_bit() before using the\nreturn value as an index array since it happens to overflow the array\nand then panic:\n\n[  107.318430] Kernel BUG [#1]\n[  107.319434] CPU: 3 PID: 1238 Comm: kill Tainted: G            E      6.6.0-rc6ubuntu-defconfig #2\n[  107.319465] Hardware name: riscv-virtio,qemu (DT)\n[  107.319551] epc : pmu_sbi_ovf_handler+0x3a4/0x3ae\n[  107.319840]  ra : pmu_sbi_ovf_handler+0x52/0x3ae\n[  107.319868] epc : ffffffff80a0a77c ra : ffffffff80a0a42a sp : ffffaf83fecda350\n[  107.319884]  gp : ffffffff823961a8 tp : ffffaf8083db1dc0 t0 : ffffaf83fecda480\n[  107.319899]  t1 : ffffffff80cafe62 t2 : 000000000000ff00 s0 : ffffaf83fecda520\n[  107.319921]  s1 : ffffaf83fecda380 a0 : 00000018fca29df0 a1 : ffffffffffffffff\n[  107.319936]  a2 : 0000000001073734 a3 : 0000000000000004 a4 : 0000000000000000\n[  107.319951]  a5 : 0000000000000040 a6 : 000000001d1c8774 a7 : 0000000000504d55\n[  107.319965]  s2 : ffffffff82451f10 s3 : ffffffff82724e70 s4 : 000000000000003f\n[  107.319980]  s5 : 0000000000000011 s6 : ffffaf8083db27c0 s7 : 0000000000000000\n[  107.319995]  s8 : 0000000000000001 s9 : 00007fffb45d6558 s10: 00007fffb45d81a0\n[  107.320009]  s11: ffffaf7ffff60000 t3 : 0000000000000004 t4 : 0000000000000000\n[  107.320023]  t5 : ffffaf7f80000000 t6 : ffffaf8000000000\n[  107.320037] status: 0000000200000100 badaddr: 0000000000000000 cause: 0000000000000003\n[  107.320081] [<ffffffff80a0a77c>] pmu_sbi_ovf_handler+0x3a4/0x3ae\n[  107.320112] [<ffffffff800b42d0>] handle_percpu_devid_irq+0x9e/0x1a0\n[  107.320131] [<ffffffff800ad92c>] generic_handle_domain_irq+0x28/0x36\n[  107.320148] [<ffffffff8065f9f8>] riscv_intc_irq+0x36/0x4e\n[  107.320166] [<ffffffff80caf4a0>] handle_riscv_irq+0x54/0x86\n[  107.320189] [<ffffffff80cb0036>] do_irq+0x64/0x96\n[  107.320271] Code: 85a6 855e b097 ff7f 80e7 9220 b709 9002 4501 bbd9 (9002) 6097\n[  107.320585] ---[ end trace 0000000000000000 ]---\n[  107.320704] Kernel panic - not syncing: Fatal exception in interrupt\n[  107.320775] SMP: stopping secondary CPUs\n[  107.321219] Kernel Offset: 0x0 from 0xffffffff80000000\n[  107.333051] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-252"],"references":["https://git.kernel.org/stable/c/2c86b24095fcf72cf51bc72d12e4350163b4e11d","https://git.kernel.org/stable/c/45a0de41ec383c8b7c6d442734ba3852dd2fc4a7","https://git.kernel.org/stable/c/c6e316ac05532febb0c966fa9b55f5258ed037be","https://git.kernel.org/stable/c/2c86b24095fcf72cf51bc72d12e4350163b4e11d","https://git.kernel.org/stable/c/45a0de41ec383c8b7c6d442734ba3852dd2fc4a7"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2023-52797","score":0.0028,"percentile":0.20541,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}