CVE-2024-49918

This commit addresses a potential null pointer dereference issue in the dcn32_acquire_idle_pipe_for_head_pipe_in_layer function. The issue could occur when head_pipe is null.

The fix adds a check to ensure head_pipe is not null before asserting it. If head_pipe is null, the function returns NULL to prevent a potential null pointer dereference.

Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn32/dcn32resource.c:2690 dcn32acquireidlepipeforheadpipeinlayer() error: we previously assumed 'headpipe' could be null (see line 2681)

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c

Fixed

4f47292f488fa7041284dca1f1244116c18721f1

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c

Fixed

96d4c2ee18d732a248d053aae8c4a27cb1d68d1c

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c

Fixed

ac2140449184a26eac99585b7f69814bd3ba8f2d

Affected versions

v4.*

v4.13

v4.13-rc6

v4.13-rc7

v4.14

v4.14-rc1

v4.14-rc2

v4.14-rc3

v4.14-rc4

v4.14-rc5

v4.14-rc6

v4.14-rc7

v4.14-rc8

v4.15

v4.15-rc1

v4.15-rc2

v4.15-rc3

v4.15-rc4

v4.15-rc5

v4.15-rc6

v4.15-rc7

v4.15-rc8

v4.15-rc9

v4.16

v4.16-rc1

v4.16-rc2

v4.16-rc3

v4.16-rc4

v4.16-rc5

v4.16-rc6

v4.16-rc7

v4.17

v4.17-rc1

v4.17-rc2

v4.17-rc3

v4.17-rc4

v4.17-rc5

v4.17-rc6

v4.17-rc7

v4.18

v4.18-rc1

v4.18-rc2

v4.18-rc3

v4.18-rc4

v4.18-rc5

v4.18-rc6

v4.18-rc7

v4.18-rc8

v4.19

v4.19-rc1

v4.19-rc2

v4.19-rc3

v4.19-rc4

v4.19-rc5

v4.19-rc6

v4.19-rc7

v4.19-rc8

v4.20

v4.20-rc1

v4.20-rc2

v4.20-rc3

v4.20-rc4

v4.20-rc5

v4.20-rc6

v4.20-rc7

v5.*

v5.0

v5.0-rc1

v5.0-rc2

v5.0-rc3

v5.0-rc4

v5.0-rc5

v5.0-rc6

v5.0-rc7

v5.0-rc8

v5.1

v5.1-rc1

v5.1-rc2

v5.1-rc3

v5.1-rc4

v5.1-rc5

v5.1-rc6

v5.1-rc7

v5.10

v5.10-rc1

v5.10-rc2

v5.10-rc3

v5.10-rc4

v5.10-rc5

v5.10-rc6

v5.10-rc7

v5.11

v5.11-rc1

v5.11-rc2

v5.11-rc3

v5.11-rc4

v5.11-rc5

v5.11-rc6

v5.11-rc7

v5.12

v5.12-rc1

v5.12-rc1-dontuse

v5.12-rc2

v5.12-rc3

v5.12-rc4

v5.12-rc5

v5.12-rc6

v5.12-rc7

v5.12-rc8

v5.13

v5.13-rc1

v5.13-rc2

v5.13-rc3

v5.13-rc4

v5.13-rc5

v5.13-rc6

v5.13-rc7

v5.14

v5.14-rc1

v5.14-rc2

v5.14-rc3

v5.14-rc4

v5.14-rc5

v5.14-rc6

v5.14-rc7

v5.15

v5.15-rc1

v5.15-rc2

v5.15-rc3

v5.15-rc4

v5.15-rc5

v5.15-rc6

v5.15-rc7

v5.16

v5.16-rc1

v5.16-rc2

v5.16-rc3

v5.16-rc4

v5.16-rc5

v5.16-rc6

v5.16-rc7

v5.16-rc8

v5.17

v5.17-rc1

v5.17-rc2

v5.17-rc3

v5.17-rc4

v5.17-rc5

v5.17-rc6

v5.17-rc7

v5.17-rc8

v5.18

v5.18-rc1

v5.18-rc2

v5.18-rc3

v5.18-rc4

v5.18-rc5

v5.18-rc6

v5.18-rc7

v5.19

v5.19-rc1

v5.19-rc2

v5.19-rc3

v5.19-rc4

v5.19-rc5

v5.19-rc6

v5.19-rc7

v5.19-rc8

v5.2

v5.2-rc1

v5.2-rc2

v5.2-rc3

v5.2-rc4

v5.2-rc5

v5.2-rc6

v5.2-rc7

v5.3

v5.3-rc1

v5.3-rc2

v5.3-rc3

v5.3-rc4

v5.3-rc5

v5.3-rc6

v5.3-rc7

v5.3-rc8

v5.4

v5.4-rc1

v5.4-rc2

v5.4-rc3

v5.4-rc4

v5.4-rc5

v5.4-rc6

v5.4-rc7

v5.4-rc8

v5.5

v5.5-rc1

v5.5-rc2

v5.5-rc3

v5.5-rc4

v5.5-rc5

v5.5-rc6

v5.5-rc7

v5.6

v5.6-rc1

v5.6-rc2

v5.6-rc3

v5.6-rc4

v5.6-rc5

v5.6-rc6

v5.6-rc7

v5.7

v5.7-rc1

v5.7-rc2

v5.7-rc3

v5.7-rc4

v5.7-rc5

v5.7-rc6

v5.7-rc7

v5.8

v5.8-rc1

v5.8-rc2

v5.8-rc3

v5.8-rc4

v5.8-rc5

v5.8-rc6

v5.8-rc7

v5.9

v5.9-rc1

v5.9-rc2

v5.9-rc3

v5.9-rc4

v5.9-rc5

v5.9-rc6

v5.9-rc7

v5.9-rc8

v6.*

v6.0

v6.0-rc1

v6.0-rc2

v6.0-rc3

v6.0-rc4

v6.0-rc5

v6.0-rc6

v6.0-rc7

v6.1

v6.1-rc1

v6.1-rc2

v6.1-rc3

v6.1-rc4

v6.1-rc5

v6.1-rc6

v6.1-rc7

v6.1-rc8

v6.10

v6.10-rc1

v6.10-rc2

v6.10-rc3

v6.10-rc4

v6.10-rc5

v6.10-rc6

v6.10-rc7

v6.10.1

v6.10.10

v6.10.11

v6.10.12

v6.10.13

v6.10.2

v6.10.3

v6.10.4

v6.10.5

v6.10.6

v6.10.7

v6.10.8

v6.10.9

v6.11

v6.11-rc1

v6.11-rc2

v6.11-rc3

v6.11-rc4

v6.11-rc5

v6.11-rc6

v6.11-rc7

v6.11.1

v6.11.2

v6.2

v6.2-rc1

v6.2-rc2

v6.2-rc3

v6.2-rc4

v6.2-rc5

v6.2-rc6

v6.2-rc7

v6.2-rc8

v6.3

v6.3-rc1

v6.3-rc2

v6.3-rc3

v6.3-rc4

v6.3-rc5

v6.3-rc6

v6.3-rc7

v6.4

v6.4-rc1

v6.4-rc2

v6.4-rc3

v6.4-rc4

v6.4-rc5

v6.4-rc6

v6.4-rc7

v6.5

v6.5-rc1

v6.5-rc2

v6.5-rc3

v6.5-rc4

v6.5-rc5

v6.5-rc6

v6.5-rc7

v6.6

v6.6-rc1

v6.6-rc2

v6.6-rc3

v6.6-rc4

v6.6-rc5

v6.6-rc6

v6.6-rc7

v6.7

v6.7-rc1

v6.7-rc2

v6.7-rc3

v6.7-rc4

v6.7-rc5

v6.7-rc6

v6.7-rc7

v6.7-rc8

v6.8

v6.8-rc1

v6.8-rc2

v6.8-rc3

v6.8-rc4

v6.8-rc5

v6.8-rc6

v6.8-rc7

v6.9

v6.9-rc1

v6.9-rc2

v6.9-rc3

v6.9-rc4

v6.9-rc5

v6.9-rc6

v6.9-rc7

Database specific

vanir_signatures

[
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        "digest": {
            "function_hash": "82131336174535674585414664154096579423",
            "length": 1023.0
        },
        "id": "CVE-2024-49918-4473197f",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ac2140449184a26eac99585b7f69814bd3ba8f2d",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
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            "file": "drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c"
        },
        "signature_type": "Function"
    },
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        },
        "id": "CVE-2024-49918-4afda7a1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ac2140449184a26eac99585b7f69814bd3ba8f2d",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
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        },
        "signature_type": "Line"
    },
    {
        "digest": {
            "function_hash": "82131336174535674585414664154096579423",
            "length": 1023.0
        },
        "id": "CVE-2024-49918-7551019b",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@96d4c2ee18d732a248d053aae8c4a27cb1d68d1c",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
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            "file": "drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c"
        },
        "signature_type": "Function"
    },
    {
        "digest": {
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        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c"
        },
        "signature_type": "Line"
    },
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        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "249348768307625534682298822831761736196"
            ]
        },
        "id": "CVE-2024-49918-adf0e0c8",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4f47292f488fa7041284dca1f1244116c18721f1",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
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        },
        "signature_type": "Line"
    },
    {
        "digest": {
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        },
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4f47292f488fa7041284dca1f1244116c18721f1",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
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            "file": "drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c"
        },
        "signature_type": "Function"
    }
]

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

4.15.0

Fixed

6.10.14

Type: ECOSYSTEM
Events: Introduced

6.11.0

Fixed

6.11.3