intelligence_src_350d40f2cc69277bca
- Source-provided label
- Publisher RSS metadata
- Evidence class
- mentioned in report
- Confidence
- Not reported
- Observed
- Mar 10, 2022 00:00 UTC
- Retrieved
- Oct 14, 2026 20:37 UTC
CVE-2021-32487: Heap Buffer overflow in GSM RRM Channel Release, Cell Selection Indicator
Summary In this advisory we are disclosing a heap overflow vulnerability in the MediaTek baseband. The vulnerability can be exploited to gain arbitrary code execution in the context of the baseband runtime. The vulnerability was fixed in 2020 in some models, and received a CVE and more widely deployed fix in 2021. Vulnerability Details When processing the GSM Radio Resource Management Channel Release message, the CSN.1 decoding of the “Cell selection indicator after release of all TCH and SDCCH” information element contains a heap buffer overflow in the function FDD_csrr_decode_redirection_ie. The “Cell selection indicator after release of all TCH and SDCCH” is a type 4 information element with a minimum length of 4 octets.
Reference details
- Source category
- research-report
- First reported
- Mar 10, 2022 00:00 UTC
- Last reported
- Mar 10, 2022 00:00 UTC
- Catalog updated
- Oct 14, 2026 20:37 UTC
- Record ID
e803a184cf2c220459094c48a5006ffe960ae2c37b5a86622c8b158194b8e1fb
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Source observations
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Feed collection status
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1 sources: 0 stale, 0 needing attention, 0 paused, 0 unverified.
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