CVE-2016-2547

sound/core/timer.c in the Linux kernel before 4.4.1 employs a locking approach that does not consider slave timer instances, which allows local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call.

References

Affected packages

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

Affected ranges

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

0 Unknown introduced commit / All previous commits are affected

Fixed

b5a663aa426f4884c71cd8580adae73f33570f0d

Affected versions

v2.*

v2.6.12

v2.6.12-rc2

v2.6.12-rc3

v2.6.12-rc4

v2.6.12-rc5

v2.6.12-rc6

v2.6.13

v2.6.13-rc1

v2.6.13-rc2

v2.6.13-rc3

v2.6.13-rc4

v2.6.13-rc5

v2.6.13-rc6

v2.6.13-rc7

v2.6.14

v2.6.14-rc1

v2.6.14-rc2

v2.6.14-rc3

v2.6.14-rc4

v2.6.14-rc5

v2.6.15

v2.6.15-rc1

v2.6.15-rc2

v2.6.15-rc3

v2.6.15-rc4

v2.6.15-rc5

v2.6.15-rc6

v2.6.15-rc7

v2.6.16

v2.6.16-rc1

v2.6.16-rc2

v2.6.16-rc3

v2.6.16-rc4

v2.6.16-rc5

v2.6.16-rc6

v2.6.17

v2.6.17-rc1

v2.6.17-rc2

v2.6.17-rc3

v2.6.17-rc4

v2.6.17-rc5

v2.6.17-rc6

v2.6.18

v2.6.18-rc1

v2.6.18-rc2

v2.6.18-rc3

v2.6.18-rc4

v2.6.18-rc5

v2.6.18-rc6

v2.6.18-rc7

v2.6.19

v2.6.19-rc1

v2.6.19-rc2

v2.6.19-rc3

v2.6.19-rc4

v2.6.19-rc5

v2.6.19-rc6

v2.6.20

v2.6.20-rc1

v2.6.20-rc2

v2.6.20-rc3

v2.6.20-rc4

v2.6.20-rc5

v2.6.20-rc6

v2.6.20-rc7

v2.6.21

v2.6.21-rc1

v2.6.21-rc2

v2.6.21-rc3

v2.6.21-rc4

v2.6.21-rc5

v2.6.21-rc6

v2.6.21-rc7

v2.6.22

v2.6.22-rc1

v2.6.22-rc2

v2.6.22-rc3

v2.6.22-rc4

v2.6.22-rc5

v2.6.22-rc6

v2.6.22-rc7

v2.6.23

v2.6.23-rc1

v2.6.23-rc2

v2.6.23-rc3

v2.6.23-rc4

v2.6.23-rc5

v2.6.23-rc6

v2.6.23-rc7

v2.6.23-rc8

v2.6.23-rc9

v2.6.24

v2.6.24-rc1

v2.6.24-rc2

v2.6.24-rc3

v2.6.24-rc4

v2.6.24-rc5

v2.6.24-rc6

v2.6.24-rc7

v2.6.24-rc8

v2.6.25

v2.6.25-rc1

v2.6.25-rc2

v2.6.25-rc3

v2.6.25-rc4

v2.6.25-rc5

v2.6.25-rc6

v2.6.25-rc7

v2.6.25-rc8

v2.6.25-rc9

v2.6.26

v2.6.26-rc1

v2.6.26-rc2

v2.6.26-rc3

v2.6.26-rc4

v2.6.26-rc5

v2.6.26-rc6

v2.6.26-rc7

v2.6.26-rc8

v2.6.26-rc9

v2.6.27

v2.6.27-rc1

v2.6.27-rc2

v2.6.27-rc3

v2.6.27-rc4

v2.6.27-rc5

v2.6.27-rc6

v2.6.27-rc7

v2.6.27-rc8

v2.6.27-rc9

v2.6.28

v2.6.28-rc1

v2.6.28-rc2

v2.6.28-rc3

v2.6.28-rc4

v2.6.28-rc5

v2.6.28-rc6

v2.6.28-rc7

v2.6.28-rc8

v2.6.28-rc9

v2.6.29

v2.6.29-rc1

v2.6.29-rc2

v2.6.29-rc3

v2.6.29-rc4

v2.6.29-rc5

v2.6.29-rc6

v2.6.29-rc7

v2.6.29-rc8

v2.6.30

v2.6.30-rc1

v2.6.30-rc2

v2.6.30-rc3

v2.6.30-rc4

v2.6.30-rc5

v2.6.30-rc6

v2.6.30-rc7

v2.6.30-rc8

v2.6.31

v2.6.31-rc1

v2.6.31-rc2

v2.6.31-rc3

v2.6.31-rc4

v2.6.31-rc5

v2.6.31-rc6

v2.6.31-rc7

v2.6.31-rc8

v2.6.31-rc9

v2.6.32

v2.6.32-rc1

v2.6.32-rc2

v2.6.32-rc3

v2.6.32-rc4

v2.6.32-rc5

v2.6.32-rc6

v2.6.32-rc7

v2.6.32-rc8

v2.6.33

v2.6.33-rc1

v2.6.33-rc2

v2.6.33-rc3

v2.6.33-rc4

v2.6.33-rc5

v2.6.33-rc6

v2.6.33-rc7

v2.6.33-rc8

v2.6.34

v2.6.34-rc1

v2.6.34-rc2

v2.6.34-rc3

v2.6.34-rc4

v2.6.34-rc5

v2.6.34-rc6

v2.6.34-rc7

v2.6.35

v2.6.35-rc1

v2.6.35-rc2

v2.6.35-rc3

v2.6.35-rc4

v2.6.35-rc5

v2.6.35-rc6

v2.6.36

v2.6.36-rc1

v2.6.36-rc2

v2.6.36-rc3

v2.6.36-rc4

v2.6.36-rc5

v2.6.36-rc6

v2.6.36-rc7

v2.6.36-rc8

v2.6.37

v2.6.37-rc1

v2.6.37-rc2

v2.6.37-rc3

v2.6.37-rc4

v2.6.37-rc5

v2.6.37-rc6

v2.6.37-rc7

v2.6.37-rc8

v2.6.38

v2.6.38-rc1

v2.6.38-rc2

v2.6.38-rc3

v2.6.38-rc4

v2.6.38-rc5

v2.6.38-rc6

v2.6.38-rc7

v2.6.38-rc8

v2.6.39

v2.6.39-rc1

v2.6.39-rc2

v2.6.39-rc3

v2.6.39-rc4

v2.6.39-rc5

v2.6.39-rc6

v2.6.39-rc7

v3.*

v3.0

v3.0-rc1

v3.0-rc2

v3.0-rc3

v3.0-rc4

v3.0-rc5

v3.0-rc6

v3.0-rc7

v3.1

v3.1-rc1

v3.1-rc10

v3.1-rc2

v3.1-rc3

v3.1-rc4

v3.1-rc5

v3.1-rc6

v3.1-rc7

v3.1-rc8

v3.1-rc9

v3.10

v3.10-rc1

v3.10-rc2

v3.10-rc3

v3.10-rc4

v3.10-rc5

v3.10-rc6

v3.10-rc7

v3.11

v3.11-rc1

v3.11-rc2

v3.11-rc3

v3.11-rc4

v3.11-rc5

v3.11-rc6

v3.11-rc7

v3.12

v3.12-rc1

v3.12-rc2

v3.12-rc3

v3.12-rc4

v3.12-rc5

v3.12-rc6

v3.12-rc7

v3.13

v3.13-rc1

v3.13-rc2

v3.13-rc3

v3.13-rc4

v3.13-rc5

v3.13-rc6

v3.13-rc7

v3.13-rc8

v3.14

v3.14-rc1

v3.14-rc2

v3.14-rc3

v3.14-rc4

v3.14-rc5

v3.14-rc6

v3.14-rc7

v3.14-rc8

v3.15

v3.15-rc1

v3.15-rc2

v3.15-rc3

v3.15-rc4

v3.15-rc5

v3.15-rc6

v3.15-rc7

v3.15-rc8

v3.16

v3.16-rc1

v3.16-rc2

v3.16-rc3

v3.16-rc4

v3.16-rc5

v3.16-rc6

v3.16-rc7

v3.17

v3.17-rc1

v3.17-rc2

v3.17-rc3

v3.17-rc4

v3.17-rc5

v3.17-rc6

v3.17-rc7

v3.18

v3.18-rc1

v3.18-rc2

v3.18-rc3

v3.18-rc4

v3.18-rc5

v3.18-rc6

v3.18-rc7

v3.19

v3.19-rc1

v3.19-rc2

v3.19-rc3

v3.19-rc4

v3.19-rc5

v3.19-rc6

v3.19-rc7

v3.2

v3.2-rc1

v3.2-rc2

v3.2-rc3

v3.2-rc4

v3.2-rc5

v3.2-rc6

v3.2-rc7

v3.3

v3.3-rc1

v3.3-rc2

v3.3-rc3

v3.3-rc4

v3.3-rc5

v3.3-rc6

v3.3-rc7

v3.4

v3.4-rc1

v3.4-rc2

v3.4-rc3

v3.4-rc4

v3.4-rc5

v3.4-rc6

v3.4-rc7

v3.5

v3.5-rc1

v3.5-rc2

v3.5-rc3

v3.5-rc4

v3.5-rc5

v3.5-rc6

v3.5-rc7

v3.6

v3.6-rc1

v3.6-rc2

v3.6-rc3

v3.6-rc4

v3.6-rc5

v3.6-rc6

v3.6-rc7

v3.7

v3.7-rc1

v3.7-rc2

v3.7-rc3

v3.7-rc4

v3.7-rc5

v3.7-rc6

v3.7-rc7

v3.7-rc8

v3.8

v3.8-rc1

v3.8-rc2

v3.8-rc3

v3.8-rc4

v3.8-rc5

v3.8-rc6

v3.8-rc7

v3.9

v3.9-rc1

v3.9-rc2

v3.9-rc3

v3.9-rc4

v3.9-rc5

v3.9-rc6

v3.9-rc7

v3.9-rc8

v4.*

v4.0

v4.0-rc1

v4.0-rc2

v4.0-rc3

v4.0-rc4

v4.0-rc5

v4.0-rc6

v4.0-rc7

v4.1

v4.1-rc1

v4.1-rc2

v4.1-rc3

v4.1-rc4

v4.1-rc5

v4.1-rc6

v4.1-rc7

v4.1-rc8

v4.2

v4.2-rc1

v4.2-rc2

v4.2-rc3

v4.2-rc4

v4.2-rc5

v4.2-rc6

v4.2-rc7

v4.2-rc8

v4.3

v4.3-rc1

v4.3-rc2

v4.3-rc3

v4.3-rc4

v4.3-rc5

v4.3-rc6

v4.3-rc7

v4.4-rc1

v4.4-rc2

v4.4-rc3

v4.4-rc4

v4.4-rc5

v4.4-rc6

v4.4-rc7

v4.4-rc8

Database specific

vanir_signatures

[
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@b5a663aa426f4884c71cd8580adae73f33570f0d",
        "digest": {
            "function_hash": "279333243073280868452747803711331393340",
            "length": 541.0
        },
        "target": {
            "file": "sound/core/timer.c",
            "function": "snd_timer_check_master"
        },
        "id": "CVE-2016-2547-308b8d0f",
        "deprecated": false,
        "signature_version": "v1"
    },
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@b5a663aa426f4884c71cd8580adae73f33570f0d",
        "digest": {
            "function_hash": "121859964787789707585928047400738852171",
            "length": 302.0
        },
        "target": {
            "file": "sound/core/timer.c",
            "function": "snd_timer_start_slave"
        },
        "id": "CVE-2016-2547-8409fc2c",
        "deprecated": false,
        "signature_version": "v1"
    },
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@b5a663aa426f4884c71cd8580adae73f33570f0d",
        "digest": {
            "function_hash": "58562272900746362200948302479825789984",
            "length": 1450.0
        },
        "target": {
            "file": "sound/core/timer.c",
            "function": "snd_timer_close"
        },
        "id": "CVE-2016-2547-cd88f53f",
        "deprecated": false,
        "signature_version": "v1"
    },
    {
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@b5a663aa426f4884c71cd8580adae73f33570f0d",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "213282585418899413381904307935281867416",
                "112939590448753257640871528351949670835",
                "215298431763985125832146152142403000862",
                "166794602131443455693329849542243507892",
                "301112195915650622229346810025116154832",
                "79415741355583599041180941228191385453",
                "65480751964832513196998837871489368760",
                "297602463375697859514092669281801304262",
                "155829606742076231099233310539898119685",
                "121835348525542315284479844502368235538",
                "117699322935930037091651372055088698124",
                "298509682035342432418294776744144764049",
                "30435719069228682756812727144804451070",
                "144914047844299489090119748823560165359",
                "109169003929102831290548217813723534052",
                "126820632994511709953241755792076633815",
                "275426936284893863647019176495220482014",
                "202269422058968142097493700554823475800",
                "246451258421937102903156230162051071071",
                "216660158475137713916364118529027377401",
                "68636534915799801412969160380886303776",
                "336408969425794436927735693330608242113",
                "205742903317218994013353465796648856812",
                "326461235411814478138812209533750427850",
                "286927548108248707905795304838781655651",
                "198735529074576215303242495128284090924",
                "242457899521490466501930124063234905299",
                "280549379021589879497198838596550052843",
                "136243569946728928111959533119982302688",
                "264486815510626596105376516045195620484",
                "135233171202878631229751440970781709593"
            ]
        },
        "target": {
            "file": "sound/core/timer.c"
        },
        "id": "CVE-2016-2547-d68629d7",
        "deprecated": false,
        "signature_version": "v1"
    },
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@b5a663aa426f4884c71cd8580adae73f33570f0d",
        "digest": {
            "function_hash": "225333419839573776258821504644309464512",
            "length": 1071.0
        },
        "target": {
            "file": "sound/core/timer.c",
            "function": "_snd_timer_stop"
        },
        "id": "CVE-2016-2547-dd1cbc2e",
        "deprecated": false,
        "signature_version": "v1"
    }
]

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-2547.json"

Git / github.com/torvalds/linux