AZL-55869
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-55869.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-55869
- Upstream
- Published
- 2025-01-15T13:15:12Z
- Modified
- 2026-04-01T05:18:45.894465Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2024-57841 affecting package kernel for versions less than 5.15.176.3-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: fix memory leak in tcpconnrequest()
If inetcskreqskqueuehashadd() return false, tcpconnrequest() will return without free the dst memory, which allocated in afops->route_req.
Here is the kmemleak stack:
unreferenced object 0xffff8881198631c0 (size 240): comm "softirq", pid 0, jiffies 4299266571 (age 1802.392s) hex dump (first 32 bytes): 00 10 9b 03 81 88 ff ff 80 98 da bc ff ff ff ff ................ 81 55 18 bb ff ff ff ff 00 00 00 00 00 00 00 00 .U.............. backtrace: [<ffffffffb93e8d4c>] kmemcachealloc+0x60c/0xa80 [<ffffffffba11b4c5>] dstalloc+0x55/0x250 [<ffffffffba227bf6>] rtdst_alloc+0x46/0x1d0 [<ffffffffba23050a>] __mkrouteoutput+0x29a/0xa50 [<ffffffffba23456b>] iprouteoutputkeyhash+0x10b/0x240 [<ffffffffba2346bd>] iprouteoutputflow+0x1d/0x90 [<ffffffffba254855>] inetcskroutereq+0x2c5/0x500 [<ffffffffba26b331>] tcpconnrequest+0x691/0x12c0 [<ffffffffba27bd08>] tcprcvstateprocess+0x3c8/0x11b0 [<ffffffffba2965c6>] tcpv4dorcv+0x156/0x3b0 [<ffffffffba299c98>] tcpv4rcv+0x1cf8/0x1d80 [<ffffffffba239656>] ipprotocoldeliverrcu+0xf6/0x360 [<ffffffffba2399a6>] iplocaldeliverfinish+0xe6/0x1e0 [<ffffffffba239b8e>] iplocaldeliver+0xee/0x360 [<ffffffffba239ead>] iprcv+0xad/0x2f0 [<ffffffffba110943>] __netifreceiveskbonecore+0x123/0x140
Call dstrelease() to free the dst memory when inetcskreqskqueuehashadd() return false in tcpconnrequest().
- References