Is CVE-2024-49926 in the CISA KEV catalog?

No. CVE-2024-49926 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-49926?

CVE-2024-49926 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2024-49926?

CVE-2024-49926 has an EPSS score of 0.23% (14th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-49926?

Upgrade linux on debian 13 to 6.11.4-1 or later. Fixes are available for 97 affected products.

CVE & CISA-KEV Catalog

CVE-2024-49926

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb() For kernels built with CONFIG_FORCE_NR_CPUS=y, the nr_cpu_ids is defined as NR_CPUS instead of the number of possible cpus, this will cause the following system panic: smpboot: Allowing 4 CPUs, 0 hotplug CPUs ... setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1 ... BUG: unable to handle page fault for address: ffffffff9911c8c8 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: G W 6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6 RIP: 0010:rcu_tasks_need_gpcb+0x25d/0x2c0 RSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082 CR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0 Call Trace: <TASK> ? __die+0x23/0x80 ? page_fault_oops+0xa4/0x180 ? exc_page_fault+0x152/0x180 ? asm_exc_page_fault+0x26/0x40 ? rcu_tasks_need_gpcb+0x25d/0x2c0 ? __pfx_rcu_tasks_kthread+0x40/0x40 rcu_tasks_one_gp+0x69/0x180 rcu_tasks_kthread+0x94/0xc0 kthread+0xe8/0x140 ? __pfx_kthread+0x40/0x40 ret_from_fork+0x34/0x80 ? __pfx_kthread+0x40/0x40 ret_from_fork_asm+0x1b/0x80 </TASK> Considering that there may be holes in the CPU numbers, use the maximum possible cpu number, instead of nr_cpu_ids, for configuring enqueue and dequeue limits. [ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ]

How to fix

Remediation Available

linuxDebian

Fixed in:6.11.4-1CVE-2024-49926

linuxUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-awsUbuntu

Fixed in:6.8.0-1023.25USN-7311-1

linux-aws-6.8Ubuntu

Fixed in:6.8.0-1023.25~22.04.1USN-7311-1

linux-azureUbuntu

Fixed in:6.8.0-1025.30USN-7384-1

linux-azure-6.8Ubuntu

Fixed in:6.8.0-1025.30~22.04.1USN-7384-2

linux-azure-nvidiaUbuntu

Fixed in:6.8.0-1014.15USN-7468-1

linux-gcpUbuntu

Fixed in:6.8.0-1024.26USN-7304-1

linux-gcp-6.8Ubuntu

Fixed in:6.8.0-1024.26~22.04.1USN-7303-3

linux-gkeUbuntu

Fixed in:6.8.0-1019.23USN-7304-1

linux-gkeopUbuntu

Fixed in:6.8.0-1006.8USN-7304-1

linux-hwe-6.8Ubuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-ibmUbuntu

Fixed in:6.8.0-1022.22USN-7385-1

linux-image-6.11.0-1015-oemUbuntu

Fixed in:6.11.0-1015.15USN-7310-1

linux-image-6.8.0-1006-gkeopUbuntu

Fixed in:6.8.0-1006.8USN-7304-1

linux-image-6.8.0-1014-azure-nvidiaUbuntu

Fixed in:6.8.0-1014.15USN-7468-1

linux-image-6.8.0-1019-gkeUbuntu

Fixed in:6.8.0-1019.23USN-7304-1

linux-image-6.8.0-1019-raspiUbuntu

Fixed in:6.8.0-1019.23USN-7303-3

linux-image-6.8.0-1020-oracleUbuntu

Fixed in:6.8.0-1020.21~22.04.1USN-7303-2

Fixed in:6.8.0-1020.21USN-7303-2

linux-image-6.8.0-1020-oracle-64kUbuntu

Fixed in:6.8.0-1020.21~22.04.1USN-7303-2

Fixed in:6.8.0-1020.21USN-7303-2

linux-image-6.8.0-1022-ibmUbuntu

Fixed in:6.8.0-1022.22USN-7385-1

linux-image-6.8.0-1022-nvidiaUbuntu

Fixed in:6.8.0-1022.25~22.04.2USN-7303-1

Fixed in:6.8.0-1022.25USN-7303-1

linux-image-6.8.0-1022-nvidia-64kUbuntu

Fixed in:6.8.0-1022.25~22.04.2USN-7303-1

Fixed in:6.8.0-1022.25USN-7303-1

linux-image-6.8.0-1022-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1022.25.2USN-7303-1

linux-image-6.8.0-1022-nvidia-lowlatency-64kUbuntu

Fixed in:6.8.0-1022.25.2USN-7303-1

linux-image-6.8.0-1023-awsUbuntu

Fixed in:6.8.0-1023.25~22.04.1USN-7311-1

Fixed in:6.8.0-1023.25USN-7311-1

linux-image-6.8.0-1024-gcpUbuntu

Fixed in:6.8.0-1024.26~22.04.1USN-7303-3

Fixed in:6.8.0-1024.26USN-7304-1

linux-image-6.8.0-1024-gcp-64kUbuntu

Fixed in:6.8.0-1024.26~22.04.1USN-7303-3

Fixed in:6.8.0-1024.26USN-7304-1

linux-image-6.8.0-1024-oemUbuntu

Fixed in:6.8.0-1024.24USN-7386-1

linux-image-6.8.0-1025-azureUbuntu

Fixed in:6.8.0-1025.30~22.04.1USN-7384-2

Fixed in:6.8.0-1025.30USN-7384-1

linux-image-6.8.0-1025-azure-fdeUbuntu

Fixed in:6.8.0-1025.30~22.04.1USN-7384-2

Fixed in:6.8.0-1025.30USN-7384-1

linux-image-6.8.0-54-genericUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-image-6.8.0-54-generic-64kUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-image-6.8.0-54-lowlatencyUbuntu

Fixed in:6.8.0-54.56.1~22.04.1USN-7301-1

Fixed in:6.8.0-54.56.1USN-7301-1

linux-image-6.8.0-54-lowlatency-64kUbuntu

Fixed in:6.8.0-54.56.1~22.04.1USN-7301-1

Fixed in:6.8.0-54.56.1USN-7301-1

linux-image-6.8.0-57-genericUbuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-6.8.0-57-generic-64kUbuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-awsUbuntu

Fixed in:6.8.0-1023.25~22.04.1USN-7311-1

Fixed in:6.8.0-1023.25USN-7311-1

linux-image-aws-lts-24.04Ubuntu

Fixed in:6.8.0-1023.25USN-7311-1

linux-image-azureUbuntu

Fixed in:6.8.0-1025.30~22.04.1USN-7384-2

linux-image-azure-fdeUbuntu

Fixed in:6.8.0-1025.30~22.04.1USN-7384-2

linux-image-azure-fde-lts-24.04Ubuntu

Fixed in:6.8.0-1025.30USN-7384-1

linux-image-azure-lts-24.04Ubuntu

Fixed in:6.8.0-1025.30USN-7384-1

linux-image-azure-nvidiaUbuntu

Fixed in:6.8.0-1014.15USN-7468-1

linux-image-gcpUbuntu

Fixed in:6.8.0-1024.26~22.04.1USN-7303-3

Fixed in:6.8.0-1024.26USN-7304-1

linux-image-gcp-64kUbuntu

Fixed in:6.8.0-1024.26~22.04.1USN-7303-3

Fixed in:6.8.0-1024.26USN-7304-1

linux-image-gcp-64k-lts-24.04Ubuntu

Fixed in:6.8.0-1024.26USN-7304-1

linux-image-gcp-lts-24.04Ubuntu

Fixed in:6.8.0-1024.26USN-7304-1

linux-image-genericUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-image-generic-64kUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-image-generic-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-generic-hwe-22.04Ubuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-generic-lpaeUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-image-gkeUbuntu

Fixed in:6.8.0-1019.23USN-7304-1

linux-image-gkeopUbuntu

Fixed in:6.8.0-1006.8USN-7304-1

linux-image-gkeop-6.8Ubuntu

Fixed in:6.8.0-1006.8USN-7304-1

linux-image-ibmUbuntu

Fixed in:6.8.0-1022.22USN-7385-1

linux-image-ibm-classicUbuntu

Fixed in:6.8.0-1022.22USN-7385-1

linux-image-ibm-lts-24.04Ubuntu

Fixed in:6.8.0-1022.22USN-7385-1

linux-image-kvmUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-image-lowlatencyUbuntu

Fixed in:6.8.0-54.56.1USN-7301-1

linux-image-lowlatency-64kUbuntu

Fixed in:6.8.0-54.56.1USN-7301-1

linux-image-lowlatency-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-54.56.1~22.04.1USN-7301-1

linux-image-lowlatency-hwe-22.04Ubuntu

Fixed in:6.8.0-54.56.1~22.04.1USN-7301-1

linux-image-nvidiaUbuntu

Fixed in:6.8.0-1022.25USN-7303-1

linux-image-nvidia-6.8Ubuntu

Fixed in:6.8.0-1022.25~22.04.2USN-7303-1

linux-image-nvidia-64kUbuntu

Fixed in:6.8.0-1022.25USN-7303-1

linux-image-nvidia-64k-6.8Ubuntu

Fixed in:6.8.0-1022.25~22.04.2USN-7303-1

linux-image-nvidia-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-1022.25~22.04.2USN-7303-1

linux-image-nvidia-hwe-22.04Ubuntu

Fixed in:6.8.0-1022.25~22.04.2USN-7303-1

linux-image-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1022.25.2USN-7303-1

linux-image-nvidia-lowlatency-64kUbuntu

Fixed in:6.8.0-1022.25.2USN-7303-1

linux-image-oem-22.04Ubuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-oem-22.04aUbuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-oem-22.04bUbuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-oem-22.04cUbuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-oem-22.04dUbuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-image-oem-24.04Ubuntu

Fixed in:6.8.0-1024.24USN-7386-1

linux-image-oem-24.04aUbuntu

Fixed in:6.8.0-1024.24USN-7386-1

linux-image-oem-24.04bUbuntu

Fixed in:6.11.0-1015.15USN-7310-1

linux-image-oracleUbuntu

Fixed in:6.8.0-1020.21~22.04.1USN-7303-2

Fixed in:6.8.0-1020.21USN-7303-2

linux-image-oracle-64kUbuntu

Fixed in:6.8.0-1020.21~22.04.1USN-7303-2

Fixed in:6.8.0-1020.21USN-7303-2

linux-image-oracle-64k-lts-24.04Ubuntu

Fixed in:6.8.0-1020.21USN-7303-2

linux-image-oracle-lts-24.04Ubuntu

Fixed in:6.8.0-1020.21USN-7303-2

linux-image-raspiUbuntu

Fixed in:6.8.0-1019.23USN-7303-3

linux-image-virtualUbuntu

Fixed in:6.8.0-54.56USN-7301-1

linux-image-virtual-hwe-22.04Ubuntu

Fixed in:6.8.0-57.59~22.04.1USN-7403-1

linux-lowlatencyUbuntu

Fixed in:6.8.0-54.56.1USN-7301-1

linux-lowlatency-hwe-6.8Ubuntu

Fixed in:6.8.0-54.56.1~22.04.1USN-7301-1

linux-nvidiaUbuntu

Fixed in:6.8.0-1022.25USN-7303-1

linux-nvidia-6.8Ubuntu

Fixed in:6.8.0-1022.25~22.04.2USN-7303-1

linux-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1022.25.2USN-7303-1

linux-oem-6.11Ubuntu

Fixed in:6.11.0-1015.15USN-7310-1

linux-oem-6.8Ubuntu

Fixed in:6.8.0-1024.24USN-7386-1

linux-oracleUbuntu

Fixed in:6.8.0-1020.21USN-7303-2

linux-oracle-6.8Ubuntu

Fixed in:6.8.0-1020.21~22.04.1USN-7303-2

linux-raspiUbuntu

Fixed in:6.8.0-1019.23USN-7303-3

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.23%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

Patch4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-24.