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Vulnerability · Published Mar 15, 2024 · Assigned by Linux

CVE-2021-47133HID: amd_sfh: Fix memory leak in amd_sfh_work

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 90.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: HID: amd_sfh: Fix memory leak in amd_sfh_work Kmemleak tool detected a memory leak in the amd_sfh driver. ==================== unreferenced object 0xffff88810228ada0 (size 32): comm "insmod", pid 3968, jiffies 4295056001 (age 775.792s) hex dump (first 32 bytes): 00 20 73 1f 81 88 ff ff 00 01 00 00 00 00 ad de . s............. 22 01 00 00 00 00 ad de 01 00 02 00 00 00 00 00 "............... backtrace: [<000000007b4c8799>] kmem_cache_alloc_trace+0x163/0x4f0 [<0000000005326893>] amd_sfh_get_report+0xa4/0x1d0 [amd_sfh] [<000000002a9e5ec4>] amdtp_hid_request+0x62/0x80 [amd_sfh] [<00000000b8a95807>] sensor_hub_get_feature+0x145/0x270 [hid_sensor_hub] [<00000000fda054ee>] hid_sensor_parse_common_attributes+0x215/0x460 [hid_sensor_iio_common] [<0000000021279ecf>] hid_accel_3d_probe+0xff/0x4a0 [hid_sensor_accel_3d] [<00000000915760ce>] platform_probe+0x6a/0xd0 [<0000000060258a1f>] really_probe+0x192/0x620 [<00000000fa812f2d>] driver_probe_device+0x14a/0x1d0 [<000000005e79f7fd>] __device_attach_driver+0xbd/0x110 [<0000000070d15018>] bus_for_each_drv+0xfd/0x160 [<0000000013a3c312>] __device_attach+0x18b/0x220 [<000000008c7b4afc>] device_initial_probe+0x13/0x20 [<00000000e6e99665>] bus_probe_device+0xfe/0x120 [<00000000833fa90b>] device_add+0x6a6/0xe00 [<00000000fa901078>] platform_device_add+0x180/0x380 ==================== The fix is to freeing request_list entry once the processed entry is removed from the request_list.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47133
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47133

Affected products (as reported)

VendorProductVersions
Linux Linux 4b2c53d93a4bc9d52cc0ec354629cfc9dc217f93 – before 29beadea66a226d744d5ffdcde6b984623053d244b2c53d93a4bc9d52cc0ec354629cfc9dc217f93 – before 5ad755fd2b326aa2bc8910b0eb351ee6aece21b1
Linux Linux 5.11

References