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"I'm interested in all kinds of astronomy."
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Shawn Hooper (he/him) 🇨🇦

Happy 31st Birthday to the programming language.

https://en.wikipedia.org/wiki/PHP

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Open Source Security mailing list

X.⁠Org Security Advisory: June 2, 2026 https://www.openwall.com/lists/oss-security/2026/06/02/1
8 issues in X server and Xwayland, all with ZDI-CAN identifiers, one also already has a CVE

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@stragu @zbrown It also has a chance that it will be covered in concrete in the very near future, maybe ask the birds first if they are comfy with that.
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Here’s an easter egg in the new Lego Batman that I think all of yourwill REALLY appreciate.

It’s so good, I had to make a video.

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#LinkedIn is so full of AdTech that I need to use a dedicated browser to open any post there (otherwise I get stuck at the cookie consent window that I can't close...).

Please don't use LinkedIn as your primary publishing platform, esp. for technical content!
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Greg Linares (Laughing Mantis)

Been telling people about these kinds of hybrid threats and interactions between threat actors and victims for years, and these examples are not reflecting true nation-state efforts or capabilities.

Cyber threats aren't limiting themselves to computers so why are we?
https://bird.makeup/users/jamieantisocial/statuses/2062922881869271522

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Security Advisory: CVE-2025-52293 - Memory Safety Violation in GPAC MP4Box HEVC SPS Parser

Processing a crafted MP4 file containing malformed HEVC SPS data with `MP4Box` can trigger a segmentation fault in `gf_hevc_read_sps_bs_internal()`, causing a Denial of Service.

Summary:
The `gf_hevc_read_sps_bs_internal()` function in `media_tools/av_parsers.c` does not safely handle crafted HEVC SPS data while parsing video configuration from a malicious MP4 file. During import and split processing, malformed SPS data reaches the HEVC parser and causes an invalid memory read.

AddressSanitizer reports a `SEGV` caused by a `READ` memory access at `media_tools/av_parsers.c:9309`. The crash occurs while MP4Box processes the crafted file through the isomedia input and NAL replacement/configuration path.

CWE:
CWE classification was not specified in the local MITRE data. This issue is best described as a memory safety violation in HEVC SPS parsing, with an observed out-of-bounds/invalid read leading to SIGSEGV.

Affected Component:
```
media_tools/av_parsers.c:9309
Function: gf_hevc_read_sps_bs_internal()
```

Affected Product:
MP4Box (GPAC Multimedia Open Source Project)

Affected Version:
MP4Box versions 2.4 and earlier (GPAC build at commit: 8a0d5b43c242fe4befb88530e4c9afef37114161)

Attack Conditions:
An attacker supplies a crafted MP4 file containing malformed HEVC SPS NAL units. The issue can be reproduced locally with:

```
./MP4Box -add 3_poc.mp4 -new /dev/null -split-size 5000000
```
No elevated privileges are required. User interaction is required when the victim manually processes the malicious MP4 file, or an automated workflow invokes MP4Box on attacker-controlled media.

Impact:
The immediate observed impact is Denial of Service due to process termination. The local CVE request classifies the issue as a buffer overflow / memory safety violation. The observed ASAN trace shows an invalid read; no evidence of arbitrary code execution was observed.

Fix / mitigation status:
The issue was fixed in GPAC commit:

```
d091c7e92ef0b6497b808e243501f500135f69c4
```

Users should update to a GPAC build containing this commit or later. The parser should validate HEVC SPS bitstream boundaries and reject malformed SPS/NAL data before reading fields from the bitstream.

References:

- Issue: https://github.com/gpac/gpac/issues/3146
- PoC: https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/3/3_poc.mp4
- Fix: https://github.com/gpac/gpac/commit/d091c7e92ef0b6497b808e243501f500135f69c4

Credit
@sigdevel

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@Landa in using living birds/plants as legal shield, while in reality bulldozers would just roll over said birds while the perpetrator would pay a fine.

Edit: related documentary: https://www.youtube.com/watch?v=DfelSbPUCpE
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Inspirational Skeletor💀

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Oh! Damn. I missed this:

RIP Marcia Lucas, the woman who saved Star Wars in the edit.

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Imagine if they hired a human person who made regular mistakes and the boss just went "Hey... they will learn to do it well if you give it time. It's an investment in the future!"

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@zbrown @stragu to convince life forms to live in a place they don't naturally inhabit with a high chance of getting extinguished later
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@stragu sounds pretty cruel/inconsiderate to me...
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