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CVE-2024-56776— drm/sti: avoid potential dereference of error pointers

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存在代码问题漏洞，该漏洞源于STI DRM驱动在处理错误指针时，未检查drm_atomic_get_crtc_state的返回值，可能导致错误指针的解引用，影响显示系统的稳定性和性能。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux dd86dc2f9ae1102f46115be1f1422265c15540f1< e98ff67f5a68114804607de549c2350d27628fc7 affected
dd86dc2f9ae1102f46115be1f1422265c15540f1< 40725c5fabee804fecce41d4d5c5bae80c45e1c4 affected
dd86dc2f9ae1102f46115be1f1422265c15540f1< 8ab73ac97c0fa528f66eeccd9bb53eb6eb7d20dc affected
dd86dc2f9ae1102f46115be1f1422265c15540f1< f67786293193cf01ebcc6fdbcbd1587b24f52679 affected
dd86dc2f9ae1102f46115be1f1422265c15540f1< 831214f77037de02afc287eae93ce97f218d8c04 affected
4.6 affected
< 4.6 unaffected
5.15.174≤ 5.15.* unaffected
… +4 more rows
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I. Basic Information for CVE-2024-56776

Vulnerability Information
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Vulnerability Title
drm/sti: avoid potential dereference of error pointers
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/sti: avoid potential dereference of error pointers The return value of drm_atomic_get_crtc_state() needs to be checked. To avoid use of error pointer 'crtc_state' in case of the failure.
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 代码问题漏洞
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存在代码问题漏洞，该漏洞源于STI DRM驱动在处理错误指针时，未检查drm_atomic_get_crtc_state的返回值，可能导致错误指针的解引用，影响显示系统的稳定性和性能。
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 dd86dc2f9ae1102f46115be1f1422265c15540f1 ~ e98ff67f5a68114804607de549c2350d27628fc7 -
Linux Linux 4.6 -

II. Public POCs for CVE-2024-56776

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III. Intelligence Information for CVE-2024-56776

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Patches & Fixes for CVE-2024-56776 (5)

Same Patch Batch · Linux · 2025-01-08 · 16 CVEs total

CVE-2024-56779 9.8 CRITICAL nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur
CVE-2024-56775 7.8 HIGH drm/amd/display: Fix handling of plane refcount
CVE-2024-56784 7.8 HIGH drm/amd/display: Adding array index check to prevent memory corruption
CVE-2024-56770 net/sched: netem: account for backlog updates from child qdisc
CVE-2024-56771 mtd: spinand: winbond: Fix 512GW, 01GW, 01JW and 02JW ECC information
CVE-2024-56773 kunit: Fix potential null dereference in kunit_device_driver_test()
CVE-2024-56772 kunit: string-stream: Fix a UAF bug in kunit_init_suite()
CVE-2024-56774 btrfs: add a sanity check for btrfs root in btrfs_search_slot()
CVE-2024-56777 drm/sti: avoid potential dereference of error pointers in sti_gdp_atomic_check
CVE-2024-56778 drm/sti: avoid potential dereference of error pointers in sti_hqvdp_atomic_check
CVE-2024-56780 quota: flush quota_release_work upon quota writeback
CVE-2024-56782 ACPI: x86: Add adev NULL check to acpi_quirk_skip_serdev_enumeration()
CVE-2024-56783 netfilter: nft_socket: remove WARN_ON_ONCE on maximum cgroup level
CVE-2024-56785 MIPS: Loongson64: DTS: Really fix PCIe port nodes for ls7a
CVE-2024-56787 soc: imx8m: Probe the SoC driver as platform driver

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-56776

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