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CVE-2026-52972— crypto: af_alg - Cap AEAD AD length to 0x80000000

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基金会开源的一款操作系统内核。 Linux kernel 4.1版本存在安全漏洞，该漏洞源于AEAD AD长度限制不当，可能导致算术溢出。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1205.003

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 400c40cf78da00c16e561a3a253ca272455c42ef< f8a5203596797f394ff3f9aa4005597a92249802 affected
400c40cf78da00c16e561a3a253ca272455c42ef< a9f68d9ed38dd6e5a6c6d75b03d25c1c133e321d affected
400c40cf78da00c16e561a3a253ca272455c42ef< a4fe4eb580bbc7439f649a496d4cf38415a4021c affected
400c40cf78da00c16e561a3a253ca272455c42ef< e4c4a5074532eaaa14951994a3aad0d479aa7431 affected
400c40cf78da00c16e561a3a253ca272455c42ef< 265ac26d1c5e17b34d497cbda1f754a1ec8552bc affected
400c40cf78da00c16e561a3a253ca272455c42ef< a1c5672faf8e93e38c2deac3979cc767ca5cf918 affected
400c40cf78da00c16e561a3a253ca272455c42ef< 97948906dc8e0ea84775e03e35b60a2063c70193 affected
400c40cf78da00c16e561a3a253ca272455c42ef< 0b3a57d218618cb1cc78ddc9ba02c07de84b46f4 affected
… +12 more rows
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I. Basic Information for CVE-2026-52972

Vulnerability Information
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Vulnerability Title
crypto: af_alg - Cap AEAD AD length to 0x80000000
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Cap AEAD AD length to 0x80000000 In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000.
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基金会开源的一款操作系统内核。 Linux kernel 4.1版本存在安全漏洞，该漏洞源于AEAD AD长度限制不当，可能导致算术溢出。
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 400c40cf78da00c16e561a3a253ca272455c42ef ~ f8a5203596797f394ff3f9aa4005597a92249802 -
Linux Linux 4.1 -

II. Public POCs for CVE-2026-52972

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III. Intelligence Information for CVE-2026-52972

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Patches & Fixes for CVE-2026-52972 (9)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-53049 9.8 CRITICAL gfs2: add some missing log locking
CVE-2026-52993 9.8 CRITICAL tipc: fix double-free in tipc_buf_append()
CVE-2026-52989 9.8 CRITICAL nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-52986 9.8 CRITICAL netfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-52982 9.8 CRITICAL net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-53002 9.8 CRITICAL netfilter: conntrack: remove sprintf usage
CVE-2026-53006 9.8 CRITICAL ipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-53045 9.8 CRITICAL memory: tegra124-emc: Fix dll_change check
CVE-2026-53086 9.8 CRITICAL net: bcmgenet: fix racing timeout handler
CVE-2026-53046 9.8 CRITICAL ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-52955 9.8 CRITICAL libceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-53010 9.8 CRITICAL ksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-53088 9.8 CRITICAL net: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-52914 9.8 CRITICAL batman-adv: fix fragment reassembly length accounting
CVE-2026-53055 9.8 CRITICAL crypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-52924 9.8 CRITICAL sctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-52931 9.8 CRITICAL batman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-52999 9.1 CRITICAL netfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-53043 9.1 CRITICAL ocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-52958 9.1 CRITICAL libceph: Fix potential out-of-bounds access in osdmap_decode()

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-52972

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