high CVSS 7.1

CVE-2024-46724·Kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix out-of-bounds read of df_v1_7_channel_number Check the fb_channel_number range to avoid the array out-of-bounds read error

Severity
high
Software
Kernel
Fixed in
6.10.9
Published
2024-09-18

Affected versions

From: 6.7

Until: 6.10.9

Fixed in: 6.10.9

How to fix this CVE

Update your Linux kernel to version 6.10.9 or later to address an out-of-bounds memory read vulnerability in the AMD GPU driver's data fabric module. This flaw could allow local attackers with standard user privileges to read sensitive kernel memory or trigger a denial-of-service condition. Prioritize this patch if you operate AMD GPU-equipped systems in multi-tenant or untrusted environments.

sudo dnf update kernel kernel-devel kernel-headers

Defensia detects this vulnerability

How to check if you are affected

  1. Run 'uname -r' to display your current kernel version and compare against the affected range 6.7-6.10.8
  2. Check if AMD GPU support is compiled into your kernel with 'grep -i amdgpu /boot/config-$(uname -r)' — look for CONFIG_DRM_AMDGPU=y or =m
  3. Search kernel logs for memory access violations related to df_v1_7_channel_number by running 'dmesg | grep -i "amdgpu\|df_v1_7\|out.of.bounds"'
  4. Verify the patch is applied by checking if the kernel version is 6.10.9 or newer with 'uname -r' and confirming no amdgpu-related warnings appear in 'journalctl -xe'

FAQ

What is CVE-2024-46724?

This vulnerability is an out-of-bounds array read in the AMD GPU driver's data fabric module that occurs when the kernel fails to validate channel numbers before accessing memory. A local attacker with user-level permissions could exploit this to leak sensitive kernel memory or crash the system.

Is CVE-2024-46724 being actively exploited?

No, CVE-2024-46724 is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog and no public exploits are currently available. However, it remains a high-severity local privilege escalation vector that should be remediated promptly.

What versions of Kernel are affected by CVE-2024-46724?

Linux kernel versions 6.7 through 6.10.8 are vulnerable. The fix is available in kernel 6.10.9 and all subsequent releases.

How do I check if my server is vulnerable to CVE-2024-46724?

Run 'uname -r' to display your kernel version. If it reports a version between 6.7 and 6.10.8, and your kernel has AMD GPU (amdgpu) support enabled, your system is vulnerable.

Does Defensia detect CVE-2024-46724?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If the Linux kernel is installed on a monitored server, CVE-2024-46724 will appear in your dashboard with remediation steps.

Related Kernel CVEs

CVE-2024-42256CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: cifs: Fix server re-repick on subrequest retry When a subrequest is marked for needing retry, netfs will call cifs_prepare_write() which will make cifs repick the server for the op before renegotiating credits; it then calls cifs_issue_write() which invokes smb2_async_writev() - which re-repicks the server. If a different server is then selected, this causes the increment of server->in_flight to happen against one record and the decrement to happen against another, leading to misaccounting. Fix this by just removing the repick code in smb2_async_writev(). As this is only called from netfslib-driven code, cifs_prepare_write() should always have been called first, and so server should never be NULL and the preparatory step is repeated in the event that we do a retry. The problem manifests as a warning looking something like: WARNING: CPU: 4 PID: 72896 at fs/smb/client/smb2ops.c:97 smb2_add_credits+0x3f0/0x9e0 [cifs] ... RIP: 0010:smb2_add_credits+0x3f0/0x9e0 [cifs] ... smb2_writev_callback+0x334/0x560 [cifs] cifs_demultiplex_thread+0x77a/0x11b0 [cifs] kthread+0x187/0x1d0 ret_from_fork+0x34/0x60 ret_from_fork_asm+0x1a/0x30 Which may be triggered by a number of different xfstests running against an Azure server in multichannel mode. generic/249 seems the most repeatable, but generic/215, generic/249 and generic/308 may also show it.
CVE-2024-36031CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: keys: Fix overwrite of key expiration on instantiation The expiry time of a key is unconditionally overwritten during instantiation, defaulting to turn it permanent. This causes a problem for DNS resolution as the expiration set by user-space is overwritten to TIME64_MAX, disabling further DNS updates. Fix this by restoring the condition that key_set_expiry is only called when the pre-parser sets a specific expiry.
CVE-2024-38612CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix invalid unregister error path The error path of seg6_init() is wrong in case CONFIG_IPV6_SEG6_LWTUNNEL is not defined. In that case if seg6_hmac_init() fails, the genl_unregister_family() isn't called. This issue exist since commit 46738b1317e1 ("ipv6: sr: add option to control lwtunnel support"), and commit 5559cea2d5aa ("ipv6: sr: fix possible use-after-free and null-ptr-deref") replaced unregister_pernet_subsys() with genl_unregister_family() in this error path.
CVE-2024-38623CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Use variable length array instead of fixed size Should fix smatch warning: ntfs_set_label() error: __builtin_memcpy() 'uni->name' too small (20 vs 256)
CVE-2021-47548CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() The if statement: if (port >= DSAF_GE_NUM) return; limits the value of port less than DSAF_GE_NUM (i.e., 8). However, if the value of port is 6 or 7, an array overflow could occur: port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off; because the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6). To fix this possible array overflow, we first check port and if it is greater than or equal to DSAF_MAX_PORT_NUM, the function returns.

References

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