ASB-A-204573007

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Import Source
https://storage.googleapis.com/android-osv/ASB-A-204573007.json
JSON Data
https://api.osv.dev/v1/vulns/ASB-A-204573007
Aliases
Published
2021-11-01T00:00:00Z
Modified
2026-09-22T15:22:15Z
Summary
[none]
Details

In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

References

Affected packages

Android / :linux_kernel:

Package

Name
:linux_kernel:

Affected ranges

Type
ECOSYSTEM
Events
Introduced
:0
Fixed
:2021-11-06

Affected versions

Other
Kernel

Ecosystem specific 

{
    "fixes":  [
        "https://android.googlesource.com/kernel/common/+/77f4689de17c0887775bb77896f4cc11a39bf848"
    ],
    "severity":  "High",
    "spl":  "2021-11-06",
    "types":  [
        "EoP"
    ],
    "vanir_signatures":  [
        {
            "deprecated":  false,
            "digest":  {
                "line_hashes":  [
                    "87738847746414484461941344870068227438",
                    "214976600644941457966157392288138396784",
                    "219994842081940744527435928281342041982",
                    "251510000383263481098954132756262779292",
                    "68236877813091864302708093933915698115",
                    "13233711005510888625002106547747501452"
                ],
                "threshold":  0.9
            },
            "id":  "ASB-A-204573007-2fe8de59",
            "signature_type":  "Line",
            "signature_version":  "v1",
            "source":  "https://android.googlesource.com/kernel/common/+/77f4689de17c0887775bb77896f4cc11a39bf848",
            "target":  {
                "file":  "fs/eventpoll.c"
            }
        },
        {
            "deprecated":  false,
            "digest":  {
                "function_hash":  "333290089620669436895702994728217173095",
                "length":  875
            },
            "id":  "ASB-A-204573007-63ba0478",
            "signature_type":  "Function",
            "signature_version":  "v1",
            "source":  "https://android.googlesource.com/kernel/common/+/77f4689de17c0887775bb77896f4cc11a39bf848",
            "target":  {
                "file":  "fs/eventpoll.c",
                "function":  "ep_loop_check_proc"
            }
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/android-osv/ASB-A-204573007.json"