🛡️ CVE-2024-47693 — kernel

🟡 CVSS 6.5 — Medium ✅ No Known Exploit NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

IB/core: Fix ib_cache_setup_one error flow cleanup

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

IB/core: Fix ib_cache_setup_one error flow cleanup

When ib_cache_update return an error, we exit ib_cache_setup_one

instantly with no proper cleanup, even though before this we had

already successfully done gid_table_setup_one, that results in

the kernel WARN below.

Do proper cleanup using gid_table_cleanup_one before returning

the err in order to fix the issue.

WARNING: CPU: 4 PID: 922 at drivers/infiniband/core/cache.c:806 gid_table_release_one+0x181/0x1a0

Modules linked in:

CPU: 4 UID: 0 PID: 922 Comm: c_repro Not tainted 6.11.0-rc1+ #3

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014

RIP: 0010:gid_table_release_one+0x181/0x1a0

Code: 44 8b 38 75 0c e8 2f cb 34 ff 4d 8b b5 28 05 00 00 e8 23 cb 34 ff 44 89 f9 89 da 4c 89 f6 48 c7 c7 d0 58 14 83 e8 4f de 21 ff <0f> 0b 4c 8b 75 30 e9 54 ff ff ff 48 8 3 c4 10 5b 5d 41 5c 41 5d 41

RSP: 0018:ffffc90002b835b0 EFLAGS: 00010286

RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811c8527

RDX: 0000000000000000 RSI: ffffffff811c8534 RDI: 0000000000000001

RBP: ffff8881011b3d00 R08: ffff88810b3abe00 R09: 205d303839303631

R10: 666572207972746e R11: 72746e6520444947 R12: 0000000000000001

R13: ffff888106390000 R14: ffff8881011f2110 R15: 0000000000000001

FS: 00007fecc3b70800(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000000020000340 CR3: 000000010435a001 CR4: 00000000003706b0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Call Trace:

<TASK>

? show_regs+0x94/0xa0

? __warn+0x9e/0x1c0

? gid_table_release_one+0x181/0x1a0

? report_bug+0x1f9/0x340

? gid_table_release_one+0x181/0x1a0

? handle_bug+0xa2/0x110

? exc_invalid_op+0x31/0xa0

? asm_exc_invalid_op+0x16/0x20

? __warn_printk+0xc7/0x180

? __warn_printk+0xd4/0x180

? gid_table_release_one+0x181/0x1a0

ib_device_release+0x71/0xe0

? __pfx_ib_device_release+0x10/0x10

device_release+0x44/0xd0

kobject_put+0x135/0x3d0

put_device+0x20/0x30

rxe_net_add+0x7d/0xa0

rxe_newlink+0xd7/0x190

nldev_newlink+0x1b0/0x2a0

? __pfx_nldev_newlink+0x10/0x10

rdma_nl_rcv_msg+0x1ad/0x2e0

rdma_nl_rcv_skb.constprop.0+0x176/0x210

netlink_unicast+0x2de/0x400

netlink_sendmsg+0x306/0x660

__sock_sendmsg+0x110/0x120

____sys_sendmsg+0x30e/0x390

___sys_sendmsg+0x9b/0xf0

? kstrtouint+0x6e/0xa0

? kstrtouint_from_user+0x7c/0xb0

? get_pid_task+0xb0/0xd0

? proc_fail_nth_write+0x5b/0x140

? __fget_light+0x9a/0x200

? preempt_count_add+0x47/0xa0

__sys_sendmsg+0x61/0xd0

do_syscall_64+0x50/0x110

entry_SYSCALL_64_after_hwframe+0x76/0x7e

How this vulnerability can be exploited

This issue can be reached over the network, 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 none, integrity none, availability high.

Affected software

CVE-2024-47693 is recorded against 2 packages.

  • kernel (from 6.11.0 up to 6.11.2)
  • linux-kernel (from 6.11 up to 6.11.2)

Timeline and source

Published on 21 October 2024 and last revised on 15 July 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)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
lists.debian.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-47693 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-10-21
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.11.0 6.11.2
linux-kernel 6.11 6.11.2

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