CVE-2022-50626media: dvb-usb: fix memory leak in dvb_usb_adapter_init()

Description

In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb: fix memory leak in dvb_usb_adapter_init() Syzbot reports a memory leak in "dvb_usb_adapter_init()". The leak is due to not accounting for and freeing current iteration's adapter->priv in case of an error. Currently if an error occurs, it will exit before incrementing "num_adapters_initalized", which is used as a reference counter to free all adap->priv in "dvb_usb_adapter_exit()". There are multiple error paths that can exit from before incrementing the counter. Including the error handling paths for "dvb_usb_adapter_stream_init()", "dvb_usb_adapter_dvb_init()" and "dvb_usb_adapter_frontend_init()" within "dvb_usb_adapter_init()". This means that in case of an error in any of these functions the current iteration is not accounted for and the current iteration's adap->priv is not freed. Fix this by freeing the current iteration's adap->priv in the "stream_init_err:" label in the error path. The rest of the (accounted for) adap->priv objects are freed in dvb_usb_adapter_exit() as expected using the num_adapters_initalized variable. Syzbot report: BUG: memory leak unreferenced object 0xffff8881172f1a00 (size 512): comm "kworker/0:2", pid 139, jiffies 4294994873 (age 10.960s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff844af012>] dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:75 [inline] [<ffffffff844af012>] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:184 [inline] [<ffffffff844af012>] dvb_usb_device_init.cold+0x4e5/0x79e drivers/media/usb/dvb-usb/dvb-usb-init.c:308 [<ffffffff830db21d>] dib0700_probe+0x8d/0x1b0 drivers/media/usb/dvb-usb/dib0700_core.c:883 [<ffffffff82d3fdc7>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<ffffffff8274ab37>] call_driver_probe drivers/base/dd.c:542 [inline] [<ffffffff8274ab37>] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:621 [<ffffffff8274ae6c>] really_probe drivers/base/dd.c:583 [inline] [<ffffffff8274ae6c>] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:752 [<ffffffff8274af6a>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:782 [<ffffffff8274b786>] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:899 [<ffffffff82747c87>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [<ffffffff8274b352>] __device_attach+0x122/0x260 drivers/base/dd.c:970 [<ffffffff827498f6>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:487 [<ffffffff82745cdb>] device_add+0x5fb/0xdf0 drivers/base/core.c:3405 [<ffffffff82d3d202>] usb_set_configuration+0x8f2/0xb80 drivers/usb/core/message.c:2170 [<ffffffff82d4dbfc>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82d3f49c>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff8274ab37>] call_driver_probe drivers/base/dd.c:542 [inline] [<ffffffff8274ab37>] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:621 [<ffffffff8274ae6c>] really_probe drivers/base/dd.c:583 [inline] [<ffffffff8274ae6c>] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:752

Timeline

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.

EPSS (exploitation in 30 days)

0.25% · top 84% of all CVEs (13 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

• Linux · Linux

  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < 733bc9e226da2a7f43b10031b8ebfc26d89ec4bd
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < e5a49140035591d13ff57a7537c65217e5af0d15
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < 21b6b0c9f3796e6917e90db403dae9e74025fc40
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < 17217737c174883dd975885ab4bee4b00f517239
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < 7d7ab25ead969594df05fb09ee46ca931d46c5c8
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < d0af6220bb1eed8225a5511de5a3bd386b94afa4
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < e5d01eb6dc2f699a395d3e731c58a9b3bb4e269f
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < 93bbf2ed428142aa9a9693721230b28571678bf8
  • affected 4d43e13f723e12734257277cc38497fab1efc605 – < 94d90fb06b94a90c176270d38861bcba34ce377d

• Linux · Linux

  • affected 2.6.19
  • unaffected < 2.6.19
  • unaffected 4.9.337 – ≤ 4.9.*
  • unaffected 4.14.303 – ≤ 4.14.*
  • unaffected 4.19.270 – ≤ 4.19.*
  • unaffected 5.4.229 – ≤ 5.4.*
  • unaffected 5.10.163 – ≤ 5.10.*
  • unaffected 5.15.86 – ≤ 5.15.*
  • unaffected 6.0.16 – ≤ 6.0.*
  • unaffected 6.1.2 – ≤ 6.1.*
  • unaffected 6.2 – ≤ *

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2022-55686 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-50626](https://cveledger.app/badge/CVE-2022-50626.svg)](https://cveledger.app/cve/CVE-2022-50626)

Record last updated 11 May 2026, 19:22 UTC.