DEBIAN-CVE-2022-50256

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Source

https://security-tracker.debian.org/tracker/CVE-2022-50256

Import Source

https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50256.json

JSON Data

https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-50256

Upstream

CVE-2022-50256

Published

2025-09-15T14:15:36.363Z

Modified

2025-11-26T11:15:42.334158Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

In the Linux kernel, the following vulnerability has been resolved: drm/meson: remove drm bridges at aggregate driver unbind time drm bridges added by mesonencoderhdmiinit and mesonencodercvbsinit were not manually removed at module unload time, which caused dangling references to freed memory to remain linked in the global bridgelist. When loading the driver modules back in, the same functions would again call drmbridgeadd, and when traversing the global bridgelist, would end up peeking into freed memory. Once again KASAN revealed the problem: [ +0.000095] ============================================================= [ +0.000008] BUG: KASAN: use-after-free in _listaddvalid+0x9c/0x120 [ +0.000018] Read of size 8 at addr ffff00003da291f0 by task modprobe/2483 [ +0.000018] CPU: 3 PID: 2483 Comm: modprobe Tainted: G C O 5.19.0-rc6-lrmbkasan+ #1 [ +0.000011] Hardware name: Hardkernel ODROID-N2Plus (DT) [ +0.000008] Call trace: [ +0.000006] dumpbacktrace+0x1ec/0x280 [ +0.000012] showstack+0x24/0x80 [ +0.000008] dumpstacklvl+0x98/0xd4 [ +0.000011] printaddressdescription.constprop.0+0x80/0x520 [ +0.000011] printreport+0x128/0x260 [ +0.000008] kasanreport+0xb8/0xfc [ +0.000008] _asanreportload8noabort+0x3c/0x50 [ +0.000009] _listaddvalid+0x9c/0x120 [ +0.000009] drmbridgeadd+0x6c/0x104 [drm] [ +0.000165] dwhdmiprobe+0x1900/0x2360 [dwhdmi] [ +0.000022] mesondwhdmibind+0x520/0x814 [mesondwhdmi] [ +0.000014] componentbind+0x174/0x520 [ +0.000012] componentbindall+0x1a8/0x38c [ +0.000010] mesondrvbindmaster+0x5e8/0xb74 [mesondrm] [ +0.000032] mesondrvbind+0x20/0x2c [mesondrm] [ +0.000027] trytobringupaggregatedevice+0x19c/0x390 [ +0.000010] componentmasteraddwithmatch+0x1c8/0x284 [ +0.000009] mesondrvprobe+0x274/0x280 [mesondrm] [ +0.000026] platformprobe+0xd0/0x220 [ +0.000009] reallyprobe+0x3ac/0xa80 [ +0.000009] _driverprobedevice+0x1f8/0x400 [ +0.000009] driverprobedevice+0x68/0x1b0 [ +0.000009] _driverattach+0x20c/0x480 [ +0.000008] busforeachdev+0x114/0x1b0 [ +0.000009] driverattach+0x48/0x64 [ +0.000008] busadddriver+0x390/0x564 [ +0.000009] driverregister+0x1a8/0x3e4 [ +0.000009] _platformdriverregister+0x6c/0x94 [ +0.000008] mesondrmplatformdriverinit+0x3c/0x1000 [mesondrm] [ +0.000027] dooneinitcall+0xc4/0x2b0 [ +0.000011] doinitmodule+0x154/0x570 [ +0.000011] loadmodule+0x1a78/0x1ea4 [ +0.000008] _dosysinitmodule+0x184/0x1cc [ +0.000009] _arm64sysinitmodule+0x78/0xb0 [ +0.000009] invokesyscall+0x74/0x260 [ +0.000009] el0svccommon.constprop.0+0xcc/0x260 [ +0.000008] doel0svc+0x50/0x70 [ +0.000007] el0svc+0x68/0x1a0 [ +0.000012] el0t64synchandler+0x11c/0x150 [ +0.000008] el0t64sync+0x18c/0x190 [ +0.000016] Allocated by task 879: [ +0.000008] kasansavestack+0x2c/0x5c [ +0.000011] _kasankmalloc+0x90/0xd0 [ +0.000007] _kmalloc+0x278/0x4a0 [ +0.000011] mpiresize+0x13c/0x1d0 [ +0.000011] mpipowm+0xd24/0x1570 [ +0.000009] rsaenc+0x1a4/0x30c [ +0.000009] pkcs1padverify+0x3f0/0x580 [ +0.000009] publickeyverifysignature+0x7a8/0xba4 [ +0.000010] publickeyverifysignature2+0x40/0x60 [ +0.000008] verifysignature+0xb4/0x114 [ +0.000008] pkcs7validatetrustone.constprop.0+0x3b8/0x574 [ +0.000009] pkcs7validatetrust+0xb8/0x15c [ +0.000008] verifypkcs7messagesig+0xec/0x1b0 [ +0.000012] verifypkcs7signature+0x78/0xac [ +0.000007] modverifysig+0x110/0x190 [ +0.000009] modulesigcheck+0x114/0x1e0 [ +0.000009] loadmodule+0xa0/0x1ea4 [ +0.000008] _dosysinitmodule+0x184/0x1cc [ +0.000008] _arm64sysinitmodule+0x78/0xb0 [ +0.000008] invokesyscall+0x74/0x260 [ +0.000009] el0svccommon.constprop.0+0x1a8/0x260 [ +0.000008] doel0svc+0x50/0x70 [ +0.000007] el0svc+0x68/0x1a0 [ +0.000009] el0t64synchandler+0x11c/0x150 [ +0.000009] el0t64 ---truncated---

References

https://security-tracker.debian.org/tracker/CVE-2022-50256

Affected packages

Debian:11 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.10.46-4

5.10.46-5

5.10.70-1~bpo10+1

5.10.70-1

5.10.84-1

5.10.92-1~bpo10+1

5.10.92-1

5.10.92-2

5.10.103-1~bpo10+1

5.10.103-1

5.10.106-1

5.10.113-1

5.10.120-1~bpo10+1

5.10.120-1

5.10.127-1

5.10.127-2~bpo10+1

5.10.127-2

5.10.136-1

5.10.140-1

5.10.148-1

5.10.149-1

5.10.149-2

5.10.158-1

5.10.158-2

5.10.162-1

5.10.178-1

5.10.178-2

5.10.178-3

5.10.179-1

5.10.179-2

5.10.179-3

5.10.179-4

5.10.179-5

5.10.191-1

5.10.197-1

5.10.205-1

5.10.205-2

5.10.209-1

5.10.209-2

5.10.216-1

5.10.218-1

5.10.221-1

5.10.223-1

5.10.226-1

5.10.234-1

5.10.237-1

5.10.244-1

5.13.9-1~exp1

5.13.9-1~exp2

5.13.12-1~exp1

5.14-1~exp1

5.14-1~exp2

5.14.1-1~exp1

5.14.2-1~exp1

5.14.3-1~exp1

5.14.6-1

5.14.6-2

5.14.6-3

5.14.9-1

5.14.9-2~bpo11+1

5.14.9-2

5.14.12-1

5.14.16-1

5.15-1~exp1

5.15.1-1~exp1

5.15.2-1~exp1

5.15.3-1

5.15.5-1

5.15.5-2~bpo11+1

5.15.5-2

5.15.15-1

5.15.15-2~bpo11+1

5.15.15-2

5.16~rc1-1~exp1

5.16~rc3-1~exp1

5.16~rc4-1~exp1

5.16~rc5-1~exp1

5.16~rc6-1~exp1

5.16~rc7-1~exp1

5.16~rc8-1~exp1

5.16.3-1~exp1

5.16.4-1~exp1

5.16.7-1

5.16.7-2

5.16.10-1

5.16.11-1~bpo11+1

5.16.11-1

5.16.12-1~bpo11+1

5.16.12-1

5.16.14-1

5.16.18-1

5.17~rc3-1~exp1

5.17~rc4-1~exp1

5.17~rc5-1~exp1

5.17~rc6-1~exp1

5.17~rc7-1~exp1

5.17~rc8-1~exp1

5.17.1-1~exp1

5.17.3-1

5.17.6-1

5.17.11-1

5.18-1~exp1

5.18.2-1~bpo11+1

5.18.2-1

5.18.5-1

5.18.14-1~bpo11+1

5.18.14-1

5.18.16-1~bpo11+1

5.18.16-1

5.19~rc4-1~exp1

5.19~rc6-1~exp1

5.19-1~exp1

5.19.6-1

5.19.11-1~bpo11+1

5.19.11-1

6.*

6.0~rc7-1~exp1

6.0-1~exp1

6.0.2-1

6.0.3-1~bpo11+1

6.0.3-1

6.0.5-1

6.0.6-1

6.0.6-2

6.0.7-1

6.0.8-1

6.0.10-1

6.0.10-2

6.0.12-1~bpo11+1

6.0.12-1

6.0.12-1+alpha

6.1~rc3-1~exp1

6.1~rc5-1~exp1

6.1~rc6-1~exp1

6.1~rc7-1~exp1

6.1~rc8-1~exp1

6.1.1-1~exp1

6.1.1-1~exp2

6.1.2-1~exp1

6.1.4-1

6.1.7-1

6.1.8-1

6.1.8-1+sh4

6.1.11-1

6.1.12-1~bpo11+1

6.1.12-1

6.1.15-1~bpo11+1

6.1.15-1

6.1.20-1~bpo11+1

6.1.20-1

6.1.20-2~bpo11+1

6.1.20-2

6.1.25-1

6.1.27-1~bpo11+1

6.1.27-1

6.1.37-1

6.1.38-1

6.1.38-2~bpo11+1

6.1.38-2

6.1.38-3

6.1.38-4~bpo11+1

6.1.38-4

6.1.52-1

6.1.55-1~bpo11+1

6.1.55-1

6.1.64-1

6.1.66-1

6.1.67-1

6.1.69-1~bpo11+1

6.1.69-1

6.1.76-1~bpo11+1

6.1.76-1

6.1.82-1

6.1.85-1

6.1.90-1~bpo11+1

6.1.90-1

6.1.94-1~bpo11+1

6.1.94-1

6.1.98-1

6.1.99-1

6.1.106-1

6.1.106-2

6.1.106-3

6.1.112-1

6.1.115-1

6.1.119-1

6.1.123-1

6.1.124-1

6.1.128-1

6.1.129-1

6.1.133-1

6.1.135-1

6.1.137-1

6.1.139-1

6.1.140-1

6.1.147-1

6.1.148-1

6.1.153-1

6.1.158-1

6.3.1-1~exp1

6.3.2-1~exp1

6.3.4-1~exp1

6.3.5-1~exp1

6.3.7-1~bpo12+1

6.3.7-1

6.3.11-1

6.4~rc6-1~exp1

6.4~rc7-1~exp1

6.4.1-1~exp1

6.4.4-1~bpo12+1

6.4.4-1

6.4.4-2

6.4.4-3~bpo12+1

6.4.4-3

6.4.11-1

6.4.13-1

6.5~rc4-1~exp1

6.5~rc6-1~exp1

6.5~rc7-1~exp1

6.5.1-1~exp1

6.5.3-1~bpo12+1

6.5.3-1

6.5.6-1

6.5.8-1

6.5.10-1~bpo12+1

6.5.10-1

6.5.13-1

6.6.3-1~exp1

6.6.4-1~exp1

6.6.7-1~exp1

6.6.8-1

6.6.9-1

6.6.11-1

6.6.13-1~bpo12+1

6.6.13-1

6.6.15-1

6.6.15-2

6.7-1~exp1

6.7.1-1~exp1

6.7.4-1~exp1

6.7.7-1

6.7.9-1

6.7.9-2

6.7.12-1~bpo12+1

6.7.12-1

6.8.9-1

6.8.11-1

6.8.12-1~bpo12+1

6.8.12-1

6.9.2-1~exp1

6.9.7-1~bpo12+1

6.9.7-1

6.9.8-1

6.9.9-1

6.9.10-1~bpo12+1

6.9.10-1

6.9.11-1

6.9.12-1

6.10-1~exp1

6.10.1-1~exp1

6.10.3-1

6.10.4-1

6.10.6-1~bpo12+1

6.10.6-1

6.10.7-1

6.10.9-1

6.10.11-1~bpo12+1

6.10.11-1

6.10.12-1

6.11~rc4-1~exp1

6.11~rc5-1~exp1

6.11-1~exp1

6.11.2-1

6.11.4-1

6.11.5-1~bpo12+1

6.11.5-1

6.11.6-1

6.11.7-1

6.11.9-1

6.11.10-1~bpo12+1

6.11.10-1

6.12~rc6-1~exp1

6.12.3-1

6.12.5-1

6.12.6-1

6.12.8-1

6.12.9-1~bpo12+1

6.12.9-1

6.12.9-1+alpha

6.12.10-1

6.12.11-1

6.12.11-1+alpha

6.12.11-1+alpha.1

6.12.12-1~bpo12+1

6.12.12-1

6.12.13-1

6.12.15-1

6.12.16-1

6.12.17-1

6.12.19-1

6.12.20-1

6.12.21-1

6.12.22-1~bpo12+1

6.12.22-1

6.12.25-1

6.12.27-1~bpo12+1

6.12.27-1

6.12.29-1

6.12.30-1~bpo12+1

6.12.30-1

6.12.31-1

6.12.32-1~bpo12+1

6.12.32-1

6.12.33-1~bpo12+1

6.12.33-1

6.12.35-1~bpo12+1

6.12.35-1

6.12.37-1

6.12.38-1~bpo12+1

6.12.38-1

6.12.41-1

6.12.43-1~bpo12+1

6.12.43-1

6.12.48-1

6.12.57-1~bpo12+1

6.12.57-1

6.13~rc6-1~exp1

6.13~rc7-1~exp1

6.13.2-1~exp1

6.13.3-1~exp1

6.13.4-1~exp1

6.13.5-1~exp1

6.13.6-1~exp1

6.13.7-1~exp1

6.13.8-1~exp1

6.13.9-1~exp1

6.13.10-1~exp1

6.13.11-1~exp1

6.14.3-1~exp1

6.14.5-1~exp1

6.14.6-1~exp1

6.15~rc7-1~exp1

6.15-1~exp1

6.15.1-1~exp1

6.15.2-1~exp1

6.15.3-1~exp1

6.15.4-1~exp1

6.15.5-1~exp1

6.15.6-1~exp1

6.16~rc7-1~exp1

6.16-1~exp1

6.16.1-1~exp1

6.16.3-1~bpo13+1

6.16.3-1

6.16.5-1

6.16.6-1

6.16.7-1

6.16.8-1

6.16.9-1

6.16.10-1

6.16.11-1

6.16.12-1~bpo13+1

6.16.12-1

6.16.12-2

6.17.2-1~exp1

6.17.5-1~exp1

6.17.6-1

6.17.7-1

6.17.7-2

6.17.8-1~bpo13+1

6.17.8-1

6.18~rc4-1~exp1

6.18~rc4-1~exp2

6.18~rc5-1~exp1

6.18~rc6-1~exp1

6.18~rc7-1~exp1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

6.0.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

6.0.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:14 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

6.0.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}