Description
In the standard library in Rust before 1.50.0, read_to_end() does not validate the return value from Read in an unsafe context. This bug could lead to a buffer overflow.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rustc | 1.53.0+dfsg1-1 | — |
| Debian 13 | rustc | 1.53.0+dfsg1-1 | — |
| Debian 12 | rustc | 1.53.0+dfsg1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | rustc | 1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | rustc | No fix yet | — |
| Ubuntu Pro 14.04 LTS | rustc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | rls +13 | 1.52.1-1.module+el8.4.0+11282+0729bac9 | RHSA-2021:3063 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Devtools 2021 | rust-toolset-1.52 +2 | 1.52.1-1.el7_9 | RHSA-2021:3042 |
| Red Hat Devtools 2021 | rust-toolset-1.52-rls +12 | 1.52.1-2.el7_9 | RHSA-2021:3042 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | rust +1 | 1.52.1-1.module+el8.4.0+641+ca238f88 | RLSA-2021:3063 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | rls +13 | 1.52.1-1.module+el8.4.0+20287+5ada6442 | ELSA-2021-3063 |
Advisories 4
- RHSA-2021:3042 Red Hat Security Advisory: rust-toolset-1.52 and rust-toolset-1.52-rust security and enhancement update Red Hat Security Advisories (RHSA) · Aug 9, 2026
- RHSA-2021:3063 Red Hat Security Advisory: rust-toolset:rhel8 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 9, 2026
- RLSA-2021:3063 Moderate: rust-toolset:rhel8 security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- ELSA-2021-3063 Moderate: rust-toolset:ol8 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 12, 2021