{"cve":"CVE-2023-52995","nvd":{"published":"2025-03-27T17:15:48.153","modified":"2026-06-17T06:44:04.847","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv/kprobe: Fix instruction simulation of JALR\n\nSet kprobe at 'jalr 1140(ra)' of vfs_write results in the following\ncrash:\n\n[   32.092235] Unable to handle kernel access to user memory without uaccess routines at virtual address 00aaaaaad77b1170\n[   32.093115] Oops [#1]\n[   32.093251] Modules linked in:\n[   32.093626] CPU: 0 PID: 135 Comm: ftracetest Not tainted 6.2.0-rc2-00013-gb0aa5e5df0cb-dirty #16\n[   32.093985] Hardware name: riscv-virtio,qemu (DT)\n[   32.094280] epc : ksys_read+0x88/0xd6\n[   32.094855]  ra : ksys_read+0xc0/0xd6\n[   32.095016] epc : ffffffff801cda80 ra : ffffffff801cdab8 sp : ff20000000d7bdc0\n[   32.095227]  gp : ffffffff80f14000 tp : ff60000080f9cb40 t0 : ffffffff80f13e80\n[   32.095500]  t1 : ffffffff8000c29c t2 : ffffffff800dbc54 s0 : ff20000000d7be60\n[   32.095716]  s1 : 0000000000000000 a0 : ffffffff805a64ae a1 : ffffffff80a83708\n[   32.095921]  a2 : ffffffff80f160a0 a3 : 0000000000000000 a4 : f229b0afdb165300\n[   32.096171]  a5 : f229b0afdb165300 a6 : ffffffff80eeebd0 a7 : 00000000000003ff\n[   32.096411]  s2 : ff6000007ff76800 s3 : fffffffffffffff7 s4 : 00aaaaaad77b1170\n[   32.096638]  s5 : ffffffff80f160a0 s6 : ff6000007ff76800 s7 : 0000000000000030\n[   32.096865]  s8 : 00ffffffc3d97be0 s9 : 0000000000000007 s10: 00aaaaaad77c9410\n[   32.097092]  s11: 0000000000000000 t3 : ffffffff80f13e48 t4 : ffffffff8000c29c\n[   32.097317]  t5 : ffffffff8000c29c t6 : ffffffff800dbc54\n[   32.097505] status: 0000000200000120 badaddr: 00aaaaaad77b1170 cause: 000000000000000d\n[   32.098011] [<ffffffff801cdb72>] ksys_write+0x6c/0xd6\n[   32.098222] [<ffffffff801cdc06>] sys_write+0x2a/0x38\n[   32.098405] [<ffffffff80003c76>] ret_from_syscall+0x0/0x2\n\nSince the rs1 and rd might be the same one, such as 'jalr 1140(ra)',\nhence it requires obtaining the target address from rs1 followed by\nupdating rd.\n\n[Palmer: Pick Guo's cleanup]","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":[],"references":["https://git.kernel.org/stable/c/614471b7f7cd28a2c96ab9c90b37471c82258ffb","https://git.kernel.org/stable/c/ca0254998be4d74cf6add70ccfab0d2dbd362a10","https://git.kernel.org/stable/c/f4c8fc775fcbc9e9047b22671c55ca18f9a127d4"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:00:28.034033815+00:00"},"epss":{"cve":"CVE-2023-52995","score":0.00258,"percentile":0.17525,"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."]}