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CVE-2025-39802— lib/crypto: arm/poly1305: Fix register corruption in no-SIMD contexts

EPSS 0.02% · P6
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I. Basic Information for CVE-2025-39802

Vulnerability Information
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Vulnerability Title
lib/crypto: arm/poly1305: Fix register corruption in no-SIMD contexts
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: lib/crypto: arm/poly1305: Fix register corruption in no-SIMD contexts Restore the SIMD usability check that was removed by commit 773426f4771b ("crypto: arm/poly1305 - Add block-only interface"). This safety check is cheap and is well worth eliminating a footgun. While the Poly1305 functions should not be called when SIMD registers are unusable, if they are anyway, they should just do the right thing instead of corrupting random tasks' registers and/or computing incorrect MACs. Fixing this is also needed for poly1305_kunit to pass. Just use may_use_simd() instead of the original crypto_simd_usable(), since poly1305_kunit won't rely on crypto_simd_disabled_for_test.
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，该漏洞源于缺少SIMD可用性检查，可能导致寄存器损坏或计算错误MAC。
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 773426f4771bdd82ac5c834bf4c1775315c73a46 ~ 87bdfba903be7084cb3ee04032b14a81181fe413 -
LinuxLinux 6.16 -

II. Public POCs for CVE-2025-39802

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III. Intelligence Information for CVE-2025-39802

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50293btrfs: do not BUG_ON() on ENOMEM when dropping extent items for a range
CVE-2023-53232mt76: mt7921: fix kernel panic by accessing unallocated eeprom.data
CVE-2023-53233net/smc: fix deadlock triggered by cancel_delayed_work_syn()
CVE-2023-53234watchdog: Fix kmemleak in watchdog_cdev_register
CVE-2023-53235drm/tests: helpers: Avoid a driver uaf
CVE-2023-53236iommufd: Do not corrupt the pfn list when doing batch carry
CVE-2023-53237drm/amdgpu: fix amdgpu_irq_put call trace in gmc_v11_0_hw_fini
CVE-2023-53238phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe()
CVE-2023-53239drm/msm/mdp5: Add check for kzalloc
CVE-2023-53240xsk: check IFF_UP earlier in Tx path
CVE-2023-53241nfsd: call op_release, even when op_func returns an error
CVE-2023-53242thermal/drivers/hisi: Drop second sensor hi3660
CVE-2022-50291kcm: annotate data-races around kcm->rx_psock
CVE-2022-50292drm/msm/dp: fix bridge lifetime
CVE-2022-50303drm/amdkfd: Fix double release compute pasid
CVE-2022-50300btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
CVE-2022-50301iommu/omap: Fix buffer overflow in debugfs
CVE-2022-50302lockd: set other missing fields when unlocking files
CVE-2022-50299md: Replace snprintf with scnprintf
CVE-2022-50304mtd: core: fix possible resource leak in init_mtd()

Showing top 20 of 210 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39802

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