Buffer Overflow Vulnerability in IB/qib Package
Summary
GSD-2021-1002132: IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields. Affects Kernel versions >= f931551bafe1f10ded7f5282e2aa162c267a2e5d, < 0d4395477741608d123dad51def9fe50b7ebe952. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The IB/qib package is a part of the Linux Kernel ecosystem. It provides support for InfiniBand (IB) and Quadrics Interconnect (QIB) hardware. The package enables high-speed data transfer and communication between nodes in a cluster. It includes various components and drivers that facilitate the functioning of IB and QIB devices. However, a vulnerability has been discovered in the package that could lead to a buffer overflow.
Vulnerability Detail
The vulnerability in the IB/qib package arises from a buffer overflow in the fields of the 'struct qib_user_sdma_pkt' structure. This buffer overflow can potentially be exploited by an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition. The vulnerability was introduced in version v2.6.35 of the Linux Kernel and has been fixed in version v5.14.16 by commit 0d4395477741608d123dad51def9fe50b7ebe952. However, the impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.14.16 or later. This can be done by pulling the latest changes from the official Linux Kernel repository using the following command:
git clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, users can apply the patch provided in commit 0d4395477741608d123dad51def9fe50b7ebe952 manually. The patch modifies the affected code to prevent the buffer overflow. Here is an example of how the patch can be applied:
--- a/drivers/infiniband/hw/qib/qib_user_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_user_sdma.c
@@ -123,7 +123,7 @@ static int qib_user_sdma_verbs_send(struct ib_qp *ibqp,
struct qib_user_sdma_pkt pkt;
struct qib_user_sdma_queue *pq = to_uqueue(qib_qp);
struct qib_pportdata *ppd = qib_qp->ibqp_pd->dd;
- int ret;
+ int ret = 0;
if (unlikely(qib_sdma_running(qib_dev) == 0))
return -ENODEV;
Conclusion
In conclusion, the IB/qib package in the Linux Kernel is vulnerable to a buffer overflow in the struct qib_user_sdma_pkt fields. It is crucial to update the Linux Kernel to version v5.14.16 or later to mitigate this vulnerability. Alternatively, users can apply the provided patch as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The IB/qib package is a component of the Linux Kernel that provides support for InfiniBand and Quadrics Interconnect hardware. It enables high-speed data transfer and communication between nodes in a cluster.
A buffer overflow is a vulnerability that occurs when a program writes data beyond the boundaries of a buffer in memory. This can lead to memory corruption, crashes, or even the execution of arbitrary code.
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could allow an attacker to execute arbitrary code or cause a denial-of-service condition.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.14.16 or later. This can be done by pulling the latest changes from the official Linux Kernel repository.
Yes, a temporary workaround is available. Users can manually apply the patch provided in commit 0d4395477741608d123dad51def9fe50b7ebe952 to prevent the buffer overflow.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Follow Vulert in Google
Get more Vulert vulnerability and dependency-security updates in Google Search and AI results.