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CVE-2025-71113— crypto: af_alg - zero initialize memory allocated via sock_kmalloc

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于通过sock_kmalloc分配的内存未初始化为零，可能导致使用未初始化数据。

AI Predicted 5.5 Difficulty: Hard EPSS 0.15% · P4

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux fe869cdb89c95d060c77eea20204d6c91f233b53< e125c8e346e4eb7b3e854c862fcb4392bc13ddba affected
fe869cdb89c95d060c77eea20204d6c91f233b53< 543bf004e4eafbb302b1e6c78570d425d2ca13a0 affected
fe869cdb89c95d060c77eea20204d6c91f233b53< f81244fd6b14fecfa93b66b6bb1d59f96554e550 affected
fe869cdb89c95d060c77eea20204d6c91f233b53< 84238876e3b3b262cf62d5f4d1338e983fb27010 affected
fe869cdb89c95d060c77eea20204d6c91f233b53< 5a4b65523608974a81edbe386f8a667a3e10c726 affected
fe869cdb89c95d060c77eea20204d6c91f233b53< 51a5ab36084f3251ef87eda3e6a6236f6488925e affected
fe869cdb89c95d060c77eea20204d6c91f233b53< 6f6e309328d53a10c0fe1f77dec2db73373179b6 affected
2.6.38 affected
… +8 more rows
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I. Basic Information for CVE-2025-71113

Vulnerability Information
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Vulnerability Title
crypto: af_alg - zero initialize memory allocated via sock_kmalloc
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - zero initialize memory allocated via sock_kmalloc Several crypto user API contexts and requests allocated with sock_kmalloc() were left uninitialized, relying on callers to set fields explicitly. This resulted in the use of uninitialized data in certain error paths or when new fields are added in the future. The ACVP patches also contain two user-space interface files: algif_kpp.c and algif_akcipher.c. These too rely on proper initialization of their context structures. A particular issue has been observed with the newly added 'inflight' variable introduced in af_alg_ctx by commit: 67b164a871af ("crypto: af_alg - Disallow multiple in-flight AIO requests") Because the context is not memset to zero after allocation, the inflight variable has contained garbage values. As a result, af_alg_alloc_areq() has incorrectly returned -EBUSY randomly when the garbage value was interpreted as true: https://github.com/gregkh/linux/blame/master/crypto/af_alg.c#L1209 The check directly tests ctx->inflight without explicitly comparing against true/false. Since inflight is only ever set to true or false later, an uninitialized value has triggered -EBUSY failures. Zero-initializing memory allocated with sock_kmalloc() ensures inflight and other fields start in a known state, removing random issues caused by uninitialized data.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于通过sock_kmalloc分配的内存未初始化为零，可能导致使用未初始化数据。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux fe869cdb89c95d060c77eea20204d6c91f233b53 ~ e125c8e346e4eb7b3e854c862fcb4392bc13ddba -
Linux Linux 2.6.38 -

II. Public POCs for CVE-2025-71113

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III. Intelligence Information for CVE-2025-71113

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Same Patch Batch · Linux · 2026-01-14 · 43 CVEs total

CVE-2025-71116 9.1 CRITICAL libceph: make decode_pool() more resilient against corrupted osdmaps
CVE-2025-71112 8.8 HIGH net: hns3: add VLAN id validation before using
CVE-2025-71130 7.8 HIGH drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer
CVE-2025-71120 7.5 HIGH SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf
CVE-2025-71126 7.5 HIGH mptcp: avoid deadlock on fallback while reinjecting
CVE-2025-71128 7.5 HIGH erspan: Initialize options_len before referencing options.
CVE-2025-71131 7.5 HIGH crypto: seqiv - Do not use req->iv after crypto_aead_encrypt
CVE-2025-71132 7.5 HIGH smc91x: fix broken irq-context in PREEMPT_RT
CVE-2025-71127 7.1 HIGH wifi: mac80211: Discard Beacon frames to non-broadcast address
CVE-2025-71136 7.1 HIGH media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()
CVE-2025-71109 7.1 HIGH MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits
CVE-2025-71111 hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
CVE-2025-71110 mm/slub: reset KASAN tag in defer_free() before accessing freed memory
CVE-2025-71104 KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer
CVE-2025-71115 um: init cpu_tasks[] earlier
CVE-2025-71103 drm/msm: adreno: fix deferencing ifpc_reglist when not declared
CVE-2025-71117 block: Remove queue freezing from several sysfs store callbacks
CVE-2025-71118 ACPICA: Avoid walking the Namespace if start_node is NULL
CVE-2025-71102 scs: fix a wrong parameter in __scs_magic
CVE-2025-71105 f2fs: use global inline_xattr_slab instead of per-sb slab cache

Showing top 20 of 43 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71113

Anonymous User
2026-01-15 06:08:15

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