CVE-2026-46211— drm/msm/gem: fix error handling in msm_ioctl_gem_info_get_metadata()
Possible ATT&CK Techniques 3AI
T1068 · Exploitation for Privilege Escalation T1135 · Network Share Discovery T1211 · Exploitation for StealthAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9902cb999e4e913d98e8afe4b36c08e4a793e1ce< 697e1a9559f6962f999cc4c748c2ffffcc0a7a7a | affected |
9902cb999e4e913d98e8afe4b36c08e4a793e1ce< c57c861956b89f2e2528e6384d51e2dedd915809 | affected | ||
9902cb999e4e913d98e8afe4b36c08e4a793e1ce< b079e85c91f446f29e808d8291189e897f1884ff | affected | ||
9902cb999e4e913d98e8afe4b36c08e4a793e1ce< 47cbfe2608314b833ad61a65827d8fb363bc2d2d | affected | ||
6.8 | affected | ||
< 6.8 | unaffected | ||
6.12.90≤ 6.12.* | unaffected | ||
6.18.32≤ 6.18.* | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2026-46211
Vulnerability Information
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Vulnerability Title
drm/msm/gem: fix error handling in msm_ioctl_gem_info_get_metadata()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm/gem: fix error handling in msm_ioctl_gem_info_get_metadata() msm_ioctl_gem_info_get_metadata() always returns 0 regardless of errors. When copy_to_user() fails or the user buffer is too small, the error code stored in ret is ignored because the function unconditionally returns 0. This causes userspace to believe the ioctl succeeded when it did not. Additionally, kmemdup() can return NULL on allocation failure, but the return value is not checked. This leads to a NULL pointer dereference in the subsequent copy_to_user() call. Add the missing NULL check for kmemdup() and return ret instead of 0. Note that the SET counterpart (msm_ioctl_gem_info_set_metadata) correctly returns ret. Patchwork: https://patchwork.freedesktop.org/patch/714478/
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drm/msm/gem中错误处理不当，可能导致空指针取消引用。
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-2026-46211
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-46211 (4)
Same Patch Batch · Linux · 2026-05-28 · 138 CVEs total
| CVE-2026-46135 | 9.8 CRITICAL | nvmet-tcp: fix race between ICReq handling and queue teardown |
| CVE-2026-46137 | 9.8 CRITICAL | mptcp: pm: ADD_ADDR rtx: fix potential data-race |
| CVE-2026-46195 | 9.8 CRITICAL | smb: client: validate dacloffset before building DACL pointers |
| CVE-2026-46115 | 9.8 CRITICAL | block: add pgmap check to biovec_phys_mergeable |
| CVE-2026-46185 | 9.1 CRITICAL | smb/client: fix out-of-bounds read in symlink_data() |
| CVE-2026-46119 | 9.1 CRITICAL | libceph: Fix slab-out-of-bounds access in auth message processing |
| CVE-2026-46155 | 9.1 CRITICAL | smb/client: fix out-of-bounds read in smb2_compound_op() |
| CVE-2026-46174 | 8.8 HIGH | x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache |
| CVE-2026-46198 | 8.8 HIGH | batman-adv: fix integer overflow on buff_pos |
| CVE-2026-46125 | 8.8 HIGH | wifi: mac80211: remove station if connection prep fails |
| CVE-2026-46238 | 8.8 HIGH | batman-adv: stop caching unowned originator pointers in BAT IV |
| CVE-2026-46152 | 8.8 HIGH | wifi: mac80211: drop stray 'static' from fast-RX rx_result |
| CVE-2026-46113 | 8.8 HIGH | KVM: x86: Fix shadow paging use-after-free due to unexpected GFN |
| CVE-2026-46166 | 8.8 HIGH | wifi: mac80211: use safe list iteration in radar detect work |
| CVE-2026-46212 | 8.8 HIGH | batman-adv: bla: prevent use-after-free when deleting claims |
| CVE-2026-46232 | 8.1 HIGH | HID: playstation: Clamp num_touch_reports |
| CVE-2026-46138 | 8.1 HIGH | Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt |
| CVE-2026-46209 | 7.8 HIGH | drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() |
| CVE-2026-46208 | 7.8 HIGH | batman-adv: stop tp_meter sessions during mesh teardown |
| CVE-2026-46227 | 7.8 HIGH | sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL |
Showing top 20 of 138 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-2026-46211
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