CVE-2023-52613· NVD / CVE Program· CNA Linux

drivers/thermal/loongson2_thermal: Fix incorrect PTR_ERR() judgment

In the Linux kernel, the following vulnerability has been resolved: drivers/thermal/loongson2_thermal: Fix incorrect PTR_ERR() judgment PTR_ERR() returns -ENODEV when thermal-zones are undefined, and we need -ENODEV as the right value for comparison. Otherwise, tz->type is NULL when thermal-zones is undefined, resulting in the following error: [ 12.290030] CPU 1 Unable to handle kernel paging request at virtual address fffffffffffffff1, era == 900000000355f410, ra == 90000000031579b8 [ 12.302877] Oops[#1]: [ 12.305190] CPU: 1 PID: 181 Comm: systemd-udevd Not tainted 6.6.0-rc7+ #5385 [ 12.312304] pc 900000000355f410 ra 90000000031579b8 tp 90000001069e8000 sp 90000001069eba10 [ 12.320739] a0 0000000000000000 a1 fffffffffffffff1 a2 0000000000000014 a3 0000000000000001 [ 12.329173] a4 90000001069eb990 a5 0000000000000001 a6 0000000000001001 a7 900000010003431c [ 12.337606] t0 fffffffffffffff1 t1 54567fd5da9b4fd4 t2 900000010614ec40 t3 00000000000dc901 [ 12.346041] t4 0000000000000000 t5 0000000000000004 t6 900000010614ee20 t7 900000000d00b790 [ 12.354472] t8 00000000000dc901 u0 54567fd5da9b4fd4 s9 900000000402ae10 s0 900000010614ec40 [ 12.362916] s1 90000000039fced0 s2 ffffffffffffffed s3 ffffffffffffffed s4 9000000003acc000 [ 12.362931] s5 0000000000000004 s6 fffffffffffff000 s7 0000000000000490 s8 90000001028b2ec8 [ 12.362938] ra: 90000000031579b8 thermal_add_hwmon_sysfs+0x258/0x300 [ 12.386411] ERA: 900000000355f410 strscpy+0xf0/0x160 [ 12.391626] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) [ 12.397898] PRMD: 00000004 (PPLV0 +PIE -PWE) [ 12.403678] EUEN: 00000000 (-FPE -SXE -ASXE -BTE) [ 12.409859] ECFG: 00071c1c (LIE=2-4,10-12 VS=7) [ 12.415882] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0) [ 12.415907] BADV: fffffffffffffff1 [ 12.415911] PRID: 0014a000 (Loongson-64bit, Loongson-2K1000) [ 12.415917] Modules linked in: loongson2_thermal(+) vfat fat uio_pdrv_genirq uio fuse zram zsmalloc [ 12.415950] Process systemd-udevd (pid: 181, threadinfo=00000000358b9718, task=00000000ace72fe3) [ 12.415961] Stack : 0000000000000dc0 54567fd5da9b4fd4 900000000402ae10 9000000002df9358 [ 12.415982] ffffffffffffffed 0000000000000004 9000000107a10aa8 90000001002a3410 [ 12.415999] ffffffffffffffed ffffffffffffffed 9000000107a11268 9000000003157ab0 [ 12.416016] 9000000107a10aa8 ffffff80020fc0c8 90000001002a3410 ffffffffffffffed [ 12.416032] 0000000000000024 ffffff80020cc1e8 900000000402b2a0 9000000003acc000 [ 12.416048] 90000001002a3410 0000000000000000 ffffff80020f4030 90000001002a3410 [ 12.416065] 0000000000000000 9000000002df6808 90000001002a3410 0000000000000000 [ 12.416081] ffffff80020f4030 0000000000000000 90000001002a3410 9000000002df2ba8 [ 12.416097] 00000000000000b4 90000001002a34f4 90000001002a3410 0000000000000002 [ 12.416114] ffffff80020f4030 fffffffffffffff0 90000001002a3410 9000000002df2f30 [ 12.416131] ... [ 12.416138] Call Trace: [ 12.416142] [<900000000355f410>] strscpy+0xf0/0x160 [ 12.416167] [<90000000031579b8>] thermal_add_hwmon_sysfs+0x258/0x300 [ 12.416183] [<9000000003157ab0>] devm_thermal_add_hwmon_sysfs+0x50/0xe0 [ 12.416200] [<ffffff80020cc1e8>] loongson2_thermal_probe+0x128/0x200 [loongson2_thermal] [ 12.416232] [<9000000002df6808>] platform_probe+0x68/0x140 [ 12.416249] [<9000000002df2ba8>] really_probe+0xc8/0x3c0 [ 12.416269] [<9000000002df2f30>] __driver_probe_device+0x90/0x180 [ 12.416286] [<9000000002df3058>] driver_probe_device+0x38/0x160 [ 12.416302] [<9000000002df33a8>] __driver_attach+0xa8/0x200 [ 12.416314] [<9000000002deffec>] bus_for_each_dev+0x8c/0x120 [ 12.416330] [<9000000002df198c>] bus_add_driver+0x10c/0x2a0 [ 12.416346] [<9000000002df46b4>] driver_register+0x74/0x160 [ 12.416358] [<90000000022201a4>] do_one_initcall+0x84/0x220 [ 12.416372] [<90000000022f3ab8>] do_init_module+0x58/0x2c0 [ ---truncated---

MediumCVSS 5.5 · v3.1—No exploit Fix available

BDU:2025-14285

Published: Mar 18, 2024
Updated: Jun 17, 2026
EPSS: 0.2% · 12th percentile
CWE: CWE-476

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Action score

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Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

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Affected systems

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel6.6 and later · before 6.6.14
linux linux kernel6.7 and later · before 6.7.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 6.6affected
- e7e3a7c35791fe7a70997883fb8ada5866a40f4d and later · before 70481755ed77400e783200e2d022e5fea16060ceaffected · git
- e7e3a7c35791fe7a70997883fb8ada5866a40f4d and later · before 6010a9fc14eb1feab5cafd84422001134fe8ec58affected · git
- e7e3a7c35791fe7a70997883fb8ada5866a40f4d and later · before 15ef92e9c41124ee9d88b01208364f3fe1f45f84affected · git
- before 6.6not affected · semver
- 6.6.14 and later · up to and including 6.6.*not affected · semver
- 6.7.2 and later · up to and including 6.7.*not affected · semver
- 6.8 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:13	linux	before 6.6.15-1	6.6.15-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
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CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now
CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
83Now
CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
77This week
CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
77This week
CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV
77This week

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	15ef92e9c41124ee9d88b01208364f3fe1f45f84	Vendor (CNA)
Linux Linux	6010a9fc14eb1feab5cafd84422001134fe8ec58	Vendor (CNA)
Linux Linux	70481755ed77400e783200e2d022e5fea16060ce	Vendor (CNA)
debian:linux	6.6.15-1 · Debian:13	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

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Data sources and verification

CNA: Linux

CVE.org (CNA)May 11, 2026, 7:30 PM UTC
CISA ADPMay 11, 2026, 7:30 PM UTC
NVDJun 17, 2026, 2:43 AM UTC
FIRST EPSSSep 29, 2026, 12:00 AM UTC
OSV / GHSASep 30, 2026, 3:23 AM UTC

Each line is when that source was last processed for this record.

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