CVE-2023-52995
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-52995
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52995.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-52995
- Downstream
- Published
- 2025-03-27T16:43:29Z
- Modified
- 2025-10-21T15:24:56.601654Z
- Summary
- riscv/kprobe: Fix instruction simulation of JALR
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
riscv/kprobe: Fix instruction simulation of JALR
Set kprobe at 'jalr 1140(ra)' of vfs_write results in the following crash:
[ 32.092235] Unable to handle kernel access to user memory without uaccess routines at virtual address 00aaaaaad77b1170 [ 32.093115] Oops [#1] [ 32.093251] Modules linked in: [ 32.093626] CPU: 0 PID: 135 Comm: ftracetest Not tainted 6.2.0-rc2-00013-gb0aa5e5df0cb-dirty #16 [ 32.093985] Hardware name: riscv-virtio,qemu (DT) [ 32.094280] epc : ksysread+0x88/0xd6 [ 32.094855] ra : ksysread+0xc0/0xd6 [ 32.095016] epc : ffffffff801cda80 ra : ffffffff801cdab8 sp : ff20000000d7bdc0 [ 32.095227] gp : ffffffff80f14000 tp : ff60000080f9cb40 t0 : ffffffff80f13e80 [ 32.095500] t1 : ffffffff8000c29c t2 : ffffffff800dbc54 s0 : ff20000000d7be60 [ 32.095716] s1 : 0000000000000000 a0 : ffffffff805a64ae a1 : ffffffff80a83708 [ 32.095921] a2 : ffffffff80f160a0 a3 : 0000000000000000 a4 : f229b0afdb165300 [ 32.096171] a5 : f229b0afdb165300 a6 : ffffffff80eeebd0 a7 : 00000000000003ff [ 32.096411] s2 : ff6000007ff76800 s3 : fffffffffffffff7 s4 : 00aaaaaad77b1170 [ 32.096638] s5 : ffffffff80f160a0 s6 : ff6000007ff76800 s7 : 0000000000000030 [ 32.096865] s8 : 00ffffffc3d97be0 s9 : 0000000000000007 s10: 00aaaaaad77c9410 [ 32.097092] s11: 0000000000000000 t3 : ffffffff80f13e48 t4 : ffffffff8000c29c [ 32.097317] t5 : ffffffff8000c29c t6 : ffffffff800dbc54 [ 32.097505] status: 0000000200000120 badaddr: 00aaaaaad77b1170 cause: 000000000000000d [ 32.098011] [<ffffffff801cdb72>] ksyswrite+0x6c/0xd6 [ 32.098222] [<ffffffff801cdc06>] syswrite+0x2a/0x38 [ 32.098405] [<ffffffff80003c76>] retfromsyscall+0x0/0x2
Since the rs1 and rd might be the same one, such as 'jalr 1140(ra)', hence it requires obtaining the target address from rs1 followed by updating rd.
[Palmer: Pick Guo's cleanup]
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc22b0bcb1dd024cb9caad9230e3a387d8b061df5Fixed614471b7f7cd28a2c96ab9c90b37471c82258ffb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc22b0bcb1dd024cb9caad9230e3a387d8b061df5Fixedf4c8fc775fcbc9e9047b22671c55ca18f9a127d4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc22b0bcb1dd024cb9caad9230e3a387d8b061df5Fixedca0254998be4d74cf6add70ccfab0d2dbd362a10
Affected versions
v5.*
v6.*
Database specific
vanir_signatures
[
{
"id": "CVE-2023-52995-55c786cc",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f4c8fc775fcbc9e9047b22671c55ca18f9a127d4",
"signature_version": "v1",
"digest": {
"line_hashes": [
"282453320608616757305070567951245321826",
"115802699310807269443489172611622809682",
"220627165098736249981609842974371938607",
"337005953211406819899165431464117609767",
"12901060933892223295540604845612415989",
"217350857748806439150723219687564178682",
"193386925899155295112650477563915631118"
],
"threshold": 0.9
},
"deprecated": false,
"signature_type": "Line",
"target": {
"file": "arch/riscv/kernel/probes/simulate-insn.c"
}
},
{
"id": "CVE-2023-52995-6b8c864b",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@614471b7f7cd28a2c96ab9c90b37471c82258ffb",
"signature_version": "v1",
"digest": {
"length": 432.0,
"function_hash": "151144359884027161065765147756135253800"
},
"deprecated": false,
"signature_type": "Function",
"target": {
"function": "simulate_jalr",
"file": "arch/riscv/kernel/probes/simulate-insn.c"
}
},
{
"id": "CVE-2023-52995-807b3e47",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ca0254998be4d74cf6add70ccfab0d2dbd362a10",
"signature_version": "v1",
"digest": {
"line_hashes": [
"282453320608616757305070567951245321826",
"115802699310807269443489172611622809682",
"220627165098736249981609842974371938607",
"337005953211406819899165431464117609767",
"12901060933892223295540604845612415989",
"217350857748806439150723219687564178682",
"193386925899155295112650477563915631118"
],
"threshold": 0.9
},
"deprecated": false,
"signature_type": "Line",
"target": {
"file": "arch/riscv/kernel/probes/simulate-insn.c"
}
},
{
"id": "CVE-2023-52995-bff9e0d2",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ca0254998be4d74cf6add70ccfab0d2dbd362a10",
"signature_version": "v1",
"digest": {
"length": 432.0,
"function_hash": "151144359884027161065765147756135253800"
},
"deprecated": false,
"signature_type": "Function",
"target": {
"function": "simulate_jalr",
"file": "arch/riscv/kernel/probes/simulate-insn.c"
}
},
{
"id": "CVE-2023-52995-c64fcf81",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@614471b7f7cd28a2c96ab9c90b37471c82258ffb",
"signature_version": "v1",
"digest": {
"line_hashes": [
"282453320608616757305070567951245321826",
"115802699310807269443489172611622809682",
"220627165098736249981609842974371938607",
"337005953211406819899165431464117609767",
"12901060933892223295540604845612415989",
"217350857748806439150723219687564178682",
"193386925899155295112650477563915631118"
],
"threshold": 0.9
},
"deprecated": false,
"signature_type": "Line",
"target": {
"file": "arch/riscv/kernel/probes/simulate-insn.c"
}
},
{
"id": "CVE-2023-52995-f77251b4",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f4c8fc775fcbc9e9047b22671c55ca18f9a127d4",
"signature_version": "v1",
"digest": {
"length": 432.0,
"function_hash": "151144359884027161065765147756135253800"
},
"deprecated": false,
"signature_type": "Function",
"target": {
"function": "simulate_jalr",
"file": "arch/riscv/kernel/probes/simulate-insn.c"
}
}
]