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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2022-49853

net: macvlan: fix memory leaks of macvlan_common_newlink

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: net: macvlan: fix memory leaks of macvlan_common_newlink kmemleak reports memory leaks in macvlan_common_newlink, as follows: ip link add link eth0 name .. type macvlan mode source macaddr add <MAC-ADDR> kmemleak reports: unreferenced object 0xffff8880109bb140 (size 64): comm "ip", pid 284, jiffies 4294986150 (age 430.108s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 b8 aa 5a 12 80 88 ff ff ..........Z..... 80 1b fa 0d 80 88 ff ff 1e ff ac af c7 c1 6b 6b ..............kk backtrace: [<ffffffff813e06a7>] kmem_cache_alloc_trace+0x1c7/0x300 [<ffffffff81b66025>] macvlan_hash_add_source+0x45/0xc0 [<ffffffff81b66a67>] macvlan_changelink_sources+0xd7/0x170 [<ffffffff81b6775c>] macvlan_common_newlink+0x38c/0x5a0 [<ffffffff81b6797e>] macvlan_newlink+0xe/0x20 [<ffffffff81d97f8f>] __rtnl_newlink+0x7af/0xa50 [<ffffffff81d98278>] rtnl_newlink+0x48/0x70 ... In the scenario where the macvlan mode is configured as 'source', macvlan_changelink_sources() will be execured to reconfigure list of remote source mac addresses, at the same time, if register_netdevice() return an error, the resource generated by macvlan_changelink_sources() is not cleaned up. Using this patch, in the case of an error, it will execute macvlan_flush_sources() to ensure that the resource is cleaned up.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < 9f288e338be206713d79b29144c27fca4503c39baffected
  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < 21d3a8b6a1e39e7529ce9de07316ee13a63f305baffected
  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < a81b44d1df1f07f00c0dcc0a0b3d2fa24a46289eaffected
  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < 685e73e3f7a9fb75cbf049a9d0b7c45cc6b57b2eaffected
  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < 956e0216a19994443c90ba2ea6b0b284c9c4f9cbaffected
  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < a8d67367ab33604326cc37ab44fd1801bf5691baaffected
  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < 9ea003c4671b2fc455320ecf6d4a43b0a3c1878aaffected
  • aa5fd0fb77486b8a6764ead8627baa14790e4280 to < 23569b5652ee8e8e55a12f7835f59af6f3cefc30affected

Linux Linux

Default version status: affected

  • 4.9affected
  • 0 to < 4.9unaffected
  • 4.9.334 to ≤ 4.9.*unaffected
  • 4.14.300 to ≤ 4.14.*unaffected
  • 4.19.267 to ≤ 4.19.*unaffected
  • 5.4.225 to ≤ 5.4.*unaffected
  • 5.10.155 to ≤ 5.10.*unaffected
  • 5.15.79 to ≤ 5.15.*unaffected
  • 6.0.9 to ≤ 6.0.*unaffected
  • 6.1 to ≤ *unaffected

References