- Description
- In the Linux kernel, the following vulnerability has been resolved: bpf: Fix bpf_sk_select_reuseport() memory leak As pointed out in the original comment, lookup in sockmap can return a TCP ESTABLISHED socket. Such TCP socket may have had SO_ATTACH_REUSEPORT_EBPF set before it was ESTABLISHED. In other words, a non-NULL sk_reuseport_cb does not imply a non-refcounted socket. Drop sk's reference in both error paths. unreferenced object 0xffff888101911800 (size 2048): comm "test_progs", pid 44109, jiffies 4297131437 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 80 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 9336483b): __kmalloc_noprof+0x3bf/0x560 __reuseport_alloc+0x1d/0x40 reuseport_alloc+0xca/0x150 reuseport_attach_prog+0x87/0x140 sk_reuseport_attach_bpf+0xc8/0x100 sk_setsockopt+0x1181/0x1990 do_sock_setsockopt+0x12b/0x160 __sys_setsockopt+0x7b/0xc0 __x64_sys_setsockopt+0x1b/0x30 do_syscall_64+0x93/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD status
- Analyzed
CVSS 3.1
- Type
- Primary
- Base score
- 5.5
- Impact score
- 3.6
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
- nvd@nist.gov
- CWE-401
- Hype score
- Not currently trending
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CADC1330-CBF0-4968-9FBE-484E2128B8C5",
"versionEndExcluding": "5.15.177",
"versionStartIncluding": "5.8"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A3538C88-E91E-4A62-8415-2EA2F03EAAE3",
"versionEndExcluding": "6.1.127",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "38B2F4A9-C656-4A97-8718-D27E6BDFD82A",
"versionEndExcluding": "6.6.74",
"versionStartIncluding": "6.2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B7D0DBC3-F63C-4396-8A47-6F3D4FA0556E",
"versionEndExcluding": "6.12.11",
"versionStartIncluding": "6.7"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5A073481-106D-4B15-B4C7-FB0213B8E1D4"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DE491969-75AE-4A6B-9A58-8FC5AF98798F"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "93C0660D-7FB8-4FBA-892A-B064BA71E49E"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "034C36A6-C481-41F3-AE9A-D116E5BE6895"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc7:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5DFCDFB8-4FD0-465A-9076-D813D78FE51B"
}
],
"operator": "OR"
}
]
}
]