CVE-2026-45848— apparmor: fix NULL sock in aa_sock_file_perm
Possible ATT&CK Techniques 1AI
T1055 · Process InjectionAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 56974a6fcfef69ee0825bd66ed13e92070ac5224< 68538ec34fcb4194c7961dc4eca6f5537fec8067 | affected |
56974a6fcfef69ee0825bd66ed13e92070ac5224< 5121b7283f1c46e4c06b88b1dda7b064429d77de | affected | ||
56974a6fcfef69ee0825bd66ed13e92070ac5224< c11b7c3280d000376e27ebfed17ec7046699eab4 | affected | ||
56974a6fcfef69ee0825bd66ed13e92070ac5224< 0dc19bca22606f7a61d5988408f74e3ae0ef3486 | affected | ||
56974a6fcfef69ee0825bd66ed13e92070ac5224< 3852eb9a0392eb435c03dcb47d581bcfe6a9a95b | affected | ||
56974a6fcfef69ee0825bd66ed13e92070ac5224< ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 | affected | ||
56974a6fcfef69ee0825bd66ed13e92070ac5224< 8a0ededbfcff74598f82f1d4b8ef9db28878b317 | affected | ||
56974a6fcfef69ee0825bd66ed13e92070ac5224< 00b67657535dfea56e84d11492f5c0f61d0af297 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-45848
Vulnerability Information
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Vulnerability Title
apparmor: fix NULL sock in aa_sock_file_perm
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.
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apparmor模块在套接字设置或拆除期间未处理sock和sock-sk可能为NULL的情况，可能导致空指针解引用。
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
II. Public POCs for CVE-2026-45848
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-45848 (8)
Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total
| CVE-2026-46039 | 9.8 CRITICAL | rxgk: Fix potential integer overflow in length check |
| CVE-2026-45898 | 9.8 CRITICAL | RDMA/iwcm: Fix workqueue list corruption by removing work_list |
| CVE-2026-45988 | 9.8 CRITICAL | rxrpc: Fix re-decryption of RESPONSE packets |
| CVE-2026-45972 | 9.8 CRITICAL | smb: client: fix potential UAF and double free in smb2_open_file() |
| CVE-2026-46043 | 9.1 CRITICAL | RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv |
| CVE-2026-46056 | 8.8 HIGH | Bluetooth: hci_event: fix potential UAF in SSP passkey handlers |
| CVE-2026-45945 | 8.8 HIGH | iommu/vt-d: Fix race condition during PASID entry replacement |
| CVE-2026-46037 | 8.2 HIGH | ipv4: icmp: validate reply type before using icmp_pointers |
| CVE-2026-45843 | 8.2 HIGH | slip: bound decode() reads against the compressed packet length |
| CVE-2026-46010 | 8.1 HIGH | rxrpc: Fix error handling in rxgk_extract_token() |
| CVE-2026-46099 | 8.1 HIGH | net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels |
| CVE-2026-46076 | 7.9 HIGH | KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 |
| CVE-2026-45878 | 7.8 HIGH | drm/amdkfd: Fix watch_id bounds checking in debug address watch v2 |
| CVE-2026-45959 | 7.8 HIGH | crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree |
| CVE-2026-46011 | 7.8 HIGH | media: mtk-jpeg: fix use-after-free in release path due to uncancelled work |
| CVE-2026-45894 | 7.8 HIGH | iommu/vt-d: Clear Present bit before tearing down PASID entry |
| CVE-2026-46015 | 7.8 HIGH | tcp: call sk_data_ready() after listener migration |
| CVE-2026-45852 | 7.8 HIGH | RDMA/rxe: Fix double free in rxe_srq_from_init |
| CVE-2026-46053 | 7.8 HIGH | net: rds: fix MR cleanup on copy error |
| CVE-2026-45862 | 7.8 HIGH | iommu/vt-d: Flush cache for PASID table before using it |
Showing top 20 of 276 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46243
smb: client: reject userspace cifs.spnego descriptions - CVE-2026-46242
eventpoll: fix ep_remove struct eventpoll / struct file UAF - CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf
Same vendor: Linux
- CVE-2026-46243
smb: client: reject userspace cifs.spnego descriptions - CVE-2026-46242
eventpoll: fix ep_remove struct eventpoll / struct file UAF - CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf
V. Comments for CVE-2026-45848
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