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CVE-2022-50754— apparmor: fix a memleak in multi_transaction_new()

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multi_transaction_new中copy_from_user失败后未释放内存，可能导致内存泄漏。

AI Predicted 3.7 Difficulty: Easy EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 1dea3b41e84c5923173fe654dcb758a5cb4a46e5< 11d5fe7da67c3334cefc981297fd5defb78df15c affected
1dea3b41e84c5923173fe654dcb758a5cb4a46e5< 95e6adc6a7a4761ddf69ad713e55a06a3206309d affected
1dea3b41e84c5923173fe654dcb758a5cb4a46e5< eb0f78e28cbc8f97439c0a4c80ee5160c1df5ce6 affected
1dea3b41e84c5923173fe654dcb758a5cb4a46e5< 935d86b29093e75b6c547d90b3979c2c2d23f1c4 affected
1dea3b41e84c5923173fe654dcb758a5cb4a46e5< 775a37ffa9f4681c4ad84c8634a7eec8af7098d4 affected
1dea3b41e84c5923173fe654dcb758a5cb4a46e5< 88989932c2269ea66074f52a6213598838f8b9e7 affected
1dea3b41e84c5923173fe654dcb758a5cb4a46e5< 3d27a436e294ac5d7a51bd5348ca63a42a468b35 affected
1dea3b41e84c5923173fe654dcb758a5cb4a46e5< c73275cf6834787ca090317f1d20dbfa3b7f05aa affected
… +10 more rows
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I. Basic Information for CVE-2022-50754

Vulnerability Information
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Vulnerability Title
apparmor: fix a memleak in multi_transaction_new()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix a memleak in multi_transaction_new() In multi_transaction_new(), the variable t is not freed or passed out on the failure of copy_from_user(t->data, buf, size), which could lead to a memleak. Fix this bug by adding a put_multi_transaction(t) in the error path.
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multi_transaction_new中copy_from_user失败后未释放内存，可能导致内存泄漏。
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 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 ~ 11d5fe7da67c3334cefc981297fd5defb78df15c -
Linux Linux 4.13 -

II. Public POCs for CVE-2022-50754

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III. Intelligence Information for CVE-2022-50754

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Other References for CVE-2022-50754 (4)

Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

CVE-2025-68741 9.8 CRITICAL scsi: qla2xxx: Fix improper freeing of purex item
CVE-2023-53867 9.8 CRITICAL ceph: fix potential use-after-free bug when trimming caps
CVE-2025-68726 9.8 CRITICAL crypto: aead - Fix reqsize handling
CVE-2025-68745 9.8 CRITICAL scsi: qla2xxx: Clear cmds after chip reset
CVE-2023-54094 9.8 CRITICAL net: prevent skb corruption on frag list segmentation
CVE-2023-54090 9.8 CRITICAL ixgbe: Fix panic during XDP_TX with > 64 CPUs
CVE-2023-54076 9.8 CRITICAL smb: client: fix missed ses refcounting
CVE-2022-50717 9.8 CRITICAL nvmet-tcp: add bounds check on Transfer Tag
CVE-2025-68359 9.8 CRITICAL btrfs: fix double free of qgroup record after failure to add delayed ref head
CVE-2023-53996 9.3 CRITICAL x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVE-2023-54071 8.8 HIGH wifi: rtw88: use work to update rate to avoid RCU warning
CVE-2023-54120 8.8 HIGH Bluetooth: Fix race condition in hidp_session_thread
CVE-2023-54043 8.8 HIGH iommufd: Do not add the same hwpt to the ioas->hwpt_list twice
CVE-2022-50732 8.8 HIGH staging: rtl8192u: Fix use after free in ieee80211_rx()
CVE-2023-54092 8.8 HIGH KVM: s390: pv: fix index value of replaced ASCE
CVE-2023-54060 8.8 HIGH iommufd: Set end correctly when doing batch carry
CVE-2025-68736 8.8 HIGH landlock: Fix handling of disconnected directories
CVE-2023-54040 8.8 HIGH ice: fix wrong fallback logic for FDIR
CVE-2023-53986 8.6 HIGH mips: bmips: BCM6358: disable RAC flush for TP1
CVE-2022-50746 8.4 HIGH erofs: validate the extent length for uncompressed pclusters

Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50754

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