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🛡️ CVE-2024-57795 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

RDMA/rxe: Remove the direct link to net_device

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Remove the direct link to net_device

The similar patch in siw is in the link:

https://git.kernel.org/rdma/rdma/c/16b87037b48889

This problem also occurred in RXE. The following analyze this problem.

In the following Call Traces:

"

BUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0 net/core/dev.c:8782

Read of size 4 at addr ffff8880554640b0 by task kworker/1:4/5295

CPU: 1 UID: 0 PID: 5295 Comm: kworker/1:4 Not tainted

6.12.0-rc3-syzkaller-00399-g9197b73fd7bb #0

Hardware name: Google Compute Engine/Google Compute Engine,

BIOS Google 09/13/2024

Workqueue: infiniband ib_cache_event_task

Call Trace:

<TASK>

__dump_stack lib/dump_stack.c:94 [inline]

dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120

print_address_description mm/kasan/report.c:377 [inline]

print_report+0x169/0x550 mm/kasan/report.c:488

kasan_report+0x143/0x180 mm/kasan/report.c:601

dev_get_flags+0x188/0x1d0 net/core/dev.c:8782

rxe_query_port+0x12d/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:60

__ib_query_port drivers/infiniband/core/device.c:2111 [inline]

ib_query_port+0x168/0x7d0 drivers/infiniband/core/device.c:2143

ib_cache_update+0x1a9/0xb80 drivers/infiniband/core/cache.c:1494

ib_cache_event_task+0xf3/0x1e0 drivers/infiniband/core/cache.c:1568

process_one_work kernel/workqueue.c:3229 [inline]

process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310

worker_thread+0x870/0xd30 kernel/workqueue.c:3391

kthread+0x2f2/0x390 kernel/kthread.c:389

ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147

ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

</TASK>

"

1). In the link [1],

"

infiniband syz2: set down

"

This means that on 839.350575, the event ib_cache_event_task was sent andi

queued in ib_wq.

2). In the link [1],

"

team0 (unregistering): Port device team_slave_0 removed

"

It indicates that before 843.251853, the net device should be freed.

3). In the link [1],

"

BUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0

"

This means that on 850.559070, this slab-use-after-free problem occurred.

In all, on 839.350575, the event ib_cache_event_task was sent and queued

in ib_wq,

before 843.251853, the net device veth was freed.

on 850.559070, this event was executed, and the mentioned freed net device

was called. Thus, the above call trace occurred.

[1] https://syzkaller.appspot.com/x/log.txt?x=12e7025f980000

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2024-57795 is recorded against 2 packages.

  • kernel (from 6.7.0 up to 6.12.9)
  • linux-kernel

Timeline and source

Published on 15 January 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-01-15
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.7.0 6.12.9
linux-kernel — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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