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CVE-2025-38556— HID: core: Harden s32ton() against conversion to 0 bits

EPSS 0.02% · P7

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxdde5845a529ff753364a6d1aea61180946270bfa< 6cdf6c708717c5c6897d0800a1793e83757c7491affected
dde5845a529ff753364a6d1aea61180946270bfa< eeeaba737919bdce9885e2a00ac2912f61a3684daffected
dde5845a529ff753364a6d1aea61180946270bfa< 3c86548a20d7bc2861aa4de044991a327bebad1aaffected
dde5845a529ff753364a6d1aea61180946270bfa< 810189546cb6c8f36443ed091d91f1f5d2fc2ec7affected
dde5845a529ff753364a6d1aea61180946270bfa< d3b504146c111548ab60b6ef7aad00bfb1db05a2affected
dde5845a529ff753364a6d1aea61180946270bfa< 8b4a94b1510f6a46ec48494b52ee8f67eb4fc836affected
dde5845a529ff753364a6d1aea61180946270bfa< 865ad8469fa24de1559f247d9426ab01e5ce3a56affected
dde5845a529ff753364a6d1aea61180946270bfa< a6b87bfc2ab5bccb7ad953693c85d9062aef3fddaffected
… +10 more rows
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I. Basic Information for CVE-2025-38556

Vulnerability Information
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Vulnerability Title
HID: core: Harden s32ton() against conversion to 0 bits
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: core: Harden s32ton() against conversion to 0 bits Testing by the syzbot fuzzer showed that the HID core gets a shift-out-of-bounds exception when it tries to convert a 32-bit quantity to a 0-bit quantity. Ideally this should never occur, but there are buggy devices and some might have a report field with size set to zero; we shouldn't reject the report or the device just because of that. Instead, harden the s32ton() routine so that it returns a reasonable result instead of crashing when it is called with the number of bits set to 0 -- the same as what snto32() does.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于s32ton函数在转换0位时未正确处理，可能导致崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux dde5845a529ff753364a6d1aea61180946270bfa ~ 6cdf6c708717c5c6897d0800a1793e83757c7491 -
LinuxLinux 2.6.20 -

II. Public POCs for CVE-2025-38556

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III. Intelligence Information for CVE-2025-38556

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Same Patch Batch · Linux · 2025-08-19 · 60 CVEs total

CVE-2025-38594iommu/vt-d: Fix UAF on sva unbind with pending IOPFs
CVE-2025-38614eventpoll: Fix semi-unbounded recursion
CVE-2025-38610powercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw()
CVE-2025-38609PM / devfreq: Check governor before using governor->name
CVE-2025-38608bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls
CVE-2025-38612staging: fbtft: fix potential memory leak in fbtft_framebuffer_alloc()
CVE-2025-38598drm/amdgpu: fix use-after-free in amdgpu_userq_suspend+0x51a/0x5a0
CVE-2025-38597drm/rockchip: vop2: fail cleanly if missing a primary plane for a video-port
CVE-2025-38595xen: fix UAF in dmabuf_exp_from_pages()
CVE-2025-38596drm/panthor: Fix UAF in panthor_gem_create_with_handle() debugfs code
CVE-2025-38599wifi: mt76: mt7996: Fix possible OOB access in mt7996_tx()
CVE-2025-38593Bluetooth: hci_sync: fix double free in 'hci_discovery_filter_clear()'
CVE-2025-38592Bluetooth: hci_devcd_dump: fix out-of-bounds via dev_coredumpv
CVE-2025-38591bpf: Reject narrower access to pointer ctx fields
CVE-2025-38590net/mlx5e: Remove skb secpath if xfrm state is not found
CVE-2025-38589neighbour: Fix null-ptr-deref in neigh_flush_dev().
CVE-2025-38588ipv6: prevent infinite loop in rt6_nlmsg_size()
CVE-2025-38587ipv6: fix possible infinite loop in fib6_info_uses_dev()
CVE-2025-38586bpf, arm64: Fix fp initialization for exception boundary
CVE-2025-38585staging: media: atomisp: Fix stack buffer overflow in gmin_get_var_int()

Showing top 20 of 60 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38556

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