CVE-2024-57841 [Medium] | Information Disclosure in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: net: fix memory leak in tcp_conn_request() If inet_csk_reqsk_queue_hash_add() return false, tcp_conn_request() will return without free the dst memory, which allocated in af_ops->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>] kmem_cache_alloc+0x60c/0xa80 [<ffffffffba11b4c5>] dst_alloc+0x55/0x250 [<ffffffffba227bf6>] rt_dst_alloc+0x46/0x1d0 [<ffffffffba23050a>] __mkroute_output+0x29a/0xa50 [<ffffffffba23456b>] ip_route_output_key_hash+0x10b/0x240 [<ffffffffba2346bd>] ip_route_output_flow+0x1d/0x90 [<ffffffffba254855>] inet_csk_route_req+0x2c5/0x500 [<ffffffffba26b331>] tcp_conn_request+0x691/0x12c0 [<ffffffffba27bd08>] tcp_rcv_state_process+0x3c8/0x11b0 [<ffffffffba2965c6>] tcp_v4_do_rcv+0x156/0x3b0 [<ffffffffba299c98>] tcp_v4_rcv+0x1cf8/0x1d80 [<ffffffffba239656>] ip_protocol_deliver_rcu+0xf6/0x360 [<ffffffffba2399a6>] ip_local_deliver_finish+0xe6/0x1e0 [<ffffffffba239b8e>] ip_local_deliver+0xee/0x360 [<ffffffffba239ead>] ip_rcv+0xad/0x2f0 [<ffffffffba110943>] __netif_receive_skb_one_core+0x123/0x140 Call dst_release() to free the dst memory when inet_csk_reqsk_queue_hash_add() return false in tcp_conn_request().

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.05%	0.22%	+0.17%
2	2025-11-21	0.09%	0.05%	-0.04%
3	2025-11-18	—	0.09%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.05%

0.22%

+0.17%

2025-11-21

0.09%

0.05%

-0.04%

2025-11-18

—

0.09%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	3.6	[email protected]
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	3.6	134c704f-9b21-4f2e-91b3-4a467353bcc0

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.5

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

3.6

[email protected]

5.5

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

3.6

134c704f-9b21-4f2e-91b3-4a467353bcc0

OS Trackers for CVE-2024-57841

vendor	priority	summary	link
`debian`	unimportant	CVE-2024-57841 unimportant priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6.	https://security-tracker.debian.org/tracker/CVE-2024-57841
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2024-57841
`suse`	medium	CVE-2024-57841 severity moderate: SUSE including 52 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 268 product×package rows across 46 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Availability Extension 12 SP5, … (46 product lines)): Known Not Affected 242, Fixed 26.	https://www.suse.com/security/cve/CVE-2024-57841/
`ubuntu`	medium	CVE-2024-57841 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, released 167, ignored 147, not-affected 91, needed 1.	https://ubuntu.com/security/CVE-2024-57841

Affected software / configurations for CVE-2024-57841

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 5.15.162, < 5.15.176	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.1.97, < 6.1.124	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.6.37, < 6.6.70	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.9.8, < 6.12.9	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.13	cpe:2.3:o:linux:linux_kernel:6.13:rc1::::::
linux	linux_kernel	6.13	cpe:2.3:o:linux:linux_kernel:6.13:rc2::::::
linux	linux_kernel	6.13	cpe:2.3:o:linux:linux_kernel:6.13:rc3::::::
linux	linux_kernel	6.13	cpe:2.3:o:linux:linux_kernel:6.13:rc4::::::
linux	linux_kernel	6.13	cpe:2.3:o:linux:linux_kernel:6.13:rc5::::::

References for CVE-2024-57841

URL	Tags
https://git.kernel.org/stable/c/2af69905180b3fea12f9c1db374b153a06977021	Patch
https://git.kernel.org/stable/c/4f4aa4aa28142d53f8b06585c478476cfe325cfc	Patch
https://git.kernel.org/stable/c/9d38959677291552d1b0ed2689a540af279b5bf8	Patch
https://git.kernel.org/stable/c/b0b190218c78d8aeecfba36ea3a90063b3ede52d	Patch
https://git.kernel.org/stable/c/de3f999bf8aee16e9da1c1224191abdc69e97c9d	Patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

URL

CVE-2024-57841 | net: fix memory leak in tcp_conn_request()

Exploit prediction scoring system (EPSS) score for CVE-2024-57841

Common vulnerability scoring system (CVSS) metrics for CVE-2024-57841

Weakness enumeration for CVE-2024-57841

OS Trackers for CVE-2024-57841

Affected software / configurations for CVE-2024-57841

References for CVE-2024-57841