CVE-2021-47240
net: qrtr: fix OOB Read in qrtr_endpoint_post
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: fix OOB Read in qrtr_endpoint_post
Syzbot reported slab-out-of-bounds Read in
qrtr_endpoint_post. The problem was in wrong
_size_ type:
if (len != ALIGN(size, 4) + hdrlen)
goto err;
If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of
ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293
in header this check won't fail and
skb_put_data(skb, data + hdrlen, size);
will read out of bound from data, which is hdrlen allocated block.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: qrtr: arreglar OOB Lectura en qrtr_endpoint_post. Syzbot reportó slab-out-of-bounds Lectura en qrtr_endpoint_post. El problema estaba en el tipo de _tamaño_ incorrecto: if (len != ALIGN(size, 4) + hdrlen) goto err; Si el tamaño de qrtr_hdr es 4294967293 (0xfffffffd), el resultado de ALIGN(size, 4) será 0. En caso de len == hdrlen y size == 4294967293 en el encabezado, esta verificación no fallará y skb_put_data(skb, data + hdrlen, tamaño); leerá fuera de los límites de los datos, que son bloques asignados hdrlen.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-04-10 CVE Reserved
- 2024-05-21 CVE Published
- 2024-05-22 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (6)
URL | Tag | Source |
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https://git.kernel.org/stable/c/194ccc88297ae78d0803adad83c6dcc369787c9e | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.15 < 4.19.196 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.196" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.15 < 5.4.128 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 5.4.128" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.15 < 5.10.46 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 5.10.46" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.15 < 5.12.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 5.12.13" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.15 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 5.13" | en |
Affected
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