CVE-2024-50084: net: microchip: vcap api: Fix memory leaks in vcap_api_encode_rule_test()
In the Linux kernel, the following vulnerability has been resolved:
net: microchip: vcap api: Fix memory leaks in vcapapiencoderuletest()
Commit a3c1e45156ad ("net: microchip: vcap: Fix use-after-free error in kunit test") fixed the use-after-free error, but introduced below memory leaks by removing necessary vcapfreerule(), add it to fix it.
unreferenced object 0xffffff80ca58b700 (size 192): comm "kunittrycatch", pid 1215, jiffies 4294898264 hex dump (first 32 bytes): 00 12 7a 00 05 00 00 00 0a 00 00 00 64 00 00 00 ..z.........d... 00 00 00 00 00 00 00 00 00 04 0b cc 80 ff ff ff ................ backtrace (crc 9c09c3fe): [<0000000052a0be73>] kmemleakalloc+0x34/0x40 [<0000000043605459>] kmalloccachenoprof+0x26c/0x2f4 [<0000000040a01b8d>] vcapallocrule+0x3cc/0x9c4 [<000000003fe86110>] vcapapiencoderuletest+0x1ac/0x16b0 [<00000000b3595fc4>] kunittryruncase+0x13c/0x3ac [<0000000010f5d2bf>] kunitgenericrunthreadfnadapter+0x80/0xec [<00000000c5d82c9a>] kthread+0x2e8/0x374 [<00000000f4287308>] retfromfork+0x10/0x20 unreferenced object 0xffffff80cc0b0400 (size 64): comm "kunittrycatch", pid 1215, jiffies 4294898265 hex dump (first 32 bytes): 80 04 0b cc 80 ff ff ff 18 b7 58 ca 80 ff ff ff ..........X..... 39 00 00 00 02 00 00 00 06 05 04 03 02 01 ff ff 9............... backtrace (crc daf014e9): [<0000000052a0be73>] kmemleakalloc+0x34/0x40 [<0000000043605459>] kmalloccachenoprof+0x26c/0x2f4 [<000000000ff63fd4>] vcapruleaddkey+0x2cc/0x528 [<00000000dfdb1e81>] vcapapiencoderuletest+0x224/0x16b0 [<00000000b3595fc4>] kunittryruncase+0x13c/0x3ac [<0000000010f5d2bf>] kunitgenericrunthreadfnadapter+0x80/0xec [<00000000c5d82c9a>] kthread+0x2e8/0x374 [<00000000f4287308>] retfromfork+0x10/0x20 unreferenced object 0xffffff80cc0b0700 (size 64): comm "kunittrycatch", pid 1215, jiffies 4294898265 hex dump (first 32 bytes): 80 07 0b cc 80 ff ff ff 28 b7 58 ca 80 ff ff ff ........(.X..... 3c 00 00 00 00 00 00 00 01 2f 03 b3 ec ff ff ff <......../...... backtrace (crc 8d877792): [<0000000052a0be73>] kmemleakalloc+0x34/0x40 [<0000000043605459>] kmalloccachenoprof+0x26c/0x2f4 [<000000006eadfab7>] vcapruleaddaction+0x2d0/0x52c [<00000000323475d1>] vcapapiencoderuletest+0x4d4/0x16b0 [<00000000b3595fc4>] kunittryruncase+0x13c/0x3ac [<0000000010f5d2bf>] kunitgenericrunthreadfnadapter+0x80/0xec [<00000000c5d82c9a>] kthread+0x2e8/0x374 [<00000000f4287308>] retfromfork+0x10/0x20 unreferenced object 0xffffff80cc0b0900 (size 64): comm "kunittrycatch", pid 1215, jiffies 4294898266 hex dump (first 32 bytes): 80 09 0b cc 80 ff ff ff 80 06 0b cc 80 ff ff ff ................ 7d 00 00 00 01 00 00 00 00 00 00 00 ff 00 00 00 }............... backtrace (crc 34181e56): [<0000000052a0be73>] kmemleakalloc+0x34/0x40 [<0000000043605459>] kmalloccachenoprof+0x26c/0x2f4 [<000000000ff63fd4>] vcapruleaddkey+0x2cc/0x528 [<00000000991e3564>] vcapvalrule+0xcf0/0x13e8 [<00000000fc9868e5>] vcapapiencoderuletest+0x678/0x16b0 [<00000000b3595fc4>] kunittryruncase+0x13c/0x3ac [<0000000010f5d2bf>] kunitgenericrunthreadfnadapter+0x80/0xec [<00000000c5d82c9a>] kthread+0x2e8/0x374 [<00000000f4287308>] retfromfork+0x10/0x20 unreferenced object 0xffffff80cc0b0980 (size 64): comm "kunittrycatch", pid 1215, jiffies 4294898266 hex dump (first 32 bytes): 18 b7 58 ca 80 ff ff ff 00 09 0b cc 80 ff ff ff ..X............. 67 00 00 00 00 00 00 00 01 01 74 88 c0 ff ff ff g.........t..... backtrace (crc 275fd9be): [<0000000052a0be73>] kmemleakalloc+0x34/0x40 [<0000000043605459>] kmalloccachenoprof+0x26c/0x2f4 [<000000000ff63fd4>] vcapruleaddkey+0x2cc/0x528 [<000000001396a1a2>] testaddde ---truncated---
Other sources
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— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-50084?
CVE-2024-50084 is classified as a moderate severity vulnerability.
How do I fix CVE-2024-50084?
To fix CVE-2024-50084, update the Linux kernel to the latest version that contains the patch for this vulnerability.
What versions of Linux Kernel are affected by CVE-2024-50084?
CVE-2024-50084 affects Linux kernel versions between 6.6.51 and 6.6.58, as well as versions 6.10.10 to 6.11 and several 6.12 release candidates.
What type of vulnerability is CVE-2024-50084?
CVE-2024-50084 is a vulnerability that involves memory leaks in the vcap_api_encode_rule_test function.
Is there a known exploit for CVE-2024-50084?
As of now, there are no publicly known exploits for CVE-2024-50084.